Sydney C. Ludvigson
Names
first: |
Sydney |
middle: |
C. |
last: |
Ludvigson |
Identifer
Contact
Affiliations
-
New York University (NYU)
/ Department of Economics
Research profile
author of:
- Measuring Uncertainty
American Economic Review, American Economic Association (2015)
by Kyle Jurado & Sydney C. Ludvigson & Serena Ng
(ReDIF-article, aea:aecrev:v:105:y:2015:i:3:p:1177-1216) - Does Buffer-Stock Saving Explain the Smoothness and Excess Sensitivity of Consumption?
American Economic Review, American Economic Association (2001)
by Sydney C. Ludvigson & Alexander Michaelides
(ReDIF-article, aea:aecrev:v:91:y:2001:i:3:p:631-647) - Understanding Trend and Cycle in Asset Values: Reevaluating the Wealth Effect on Consumption
American Economic Review, American Economic Association (2004)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-article, aea:aecrev:v:94:y:2004:i:1:p:276-299) - Consumer Confidence and Consumer Spending
Journal of Economic Perspectives, American Economic Association (2004)
by Sydney C. Ludvigson
(ReDIF-article, aea:jecper:v:18:y:2004:i:2:p:29-50) - Capital Share Risk and Shareholder Heterogeneity in U.S. Stock Pricing
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2015)
by Lettau, Martin & Ludvigson, Sydney & Ma, Sai
(ReDIF-paper, cpr:ceprdp:10335) - Origins of Stock Market Fluctuations
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2015)
by Lettau, Martin & Ludvigson, Sydney & Greenwald, Dan
(ReDIF-paper, cpr:ceprdp:10336) - Consumption, Aggregate Wealth and Expected Stock Returns
CEPR Discussion Papers, C.E.P.R. Discussion Papers (1999)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:2223) - Time-Varying Risk Premia and the Cost of Capital: An Alternative Implication of the Q Theory of Investment
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2001)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:3103) - Understanding Trend and Cycle in Asset Values: Bulls, Bears and the Wealth Effect on Consumption
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2001)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:3104) - Measuring and Modelling Variation in the Risk-Return Trade-off
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2001)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:3105) - Expected Returns and Expected Dividend Growth
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2002)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:3507) - Euler Equation Errors
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2005)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:4922) - Euler Equation Errors
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2005)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-paper, cpr:ceprdp:5245) - The Declining Equity Premium: What Role Does Macroeconomic Risk Play?
CEPR Discussion Papers, C.E.P.R. Discussion Papers (2006)
by Lettau, Martin & Ludvigson, Sydney & Wachter, Jessica
(ReDIF-paper, cpr:ceprdp:5519) - An Estimation of Economic Models with Recursive Preferences
Cowles Foundation Discussion Papers, Cowles Foundation for Research in Economics, Yale University (2012)
by Xiaohong Chen & Jack Fuvilukis & Sydney Ludvigson
(ReDIF-paper, cwl:cwldpp:1883) - An Empirical Investigation of Habit-Based Asset Pricing Models
Econometric Society 2004 North American Winter Meetings, Econometric Society (2004)
by Sydney C. Ludvigson & Xiaohong Chen
(ReDIF-paper, ecm:nawm04:332) - An estimation of economic models with recursive preferences
Quantitative Economics, Econometric Society (2013)
by Xiaohong Chen & Jack Favilukis & Sydney C. Ludvigson
(ReDIF-article, ecm:quante:v:4:y:2013:i:1:p:39-83) - Advances in Consumption-Based Asset Pricing: Empirical Tests
Handbook of the Economics of Finance, Elsevier (2013)
by Ludvigson, Sydney C.
(ReDIF-chapter, eee:finchp:2-b-799-906) - tay's as good as cay: Reply
Finance Research Letters, Elsevier (2005)
by Lettau, Martin & Ludvigson, Sydney C.
(ReDIF-article, eee:finlet:v:2:y:2005:i:1:p:15-22) - Expected returns and expected dividend growth
Journal of Financial Economics, Elsevier (2005)
by Lettau, Martin & Ludvigson, Sydney C.
(ReDIF-article, eee:jfinec:v:76:y:2005:i:3:p:583-626) - The empirical risk-return relation: A factor analysis approach
Journal of Financial Economics, Elsevier (2007)
by Ludvigson, Sydney C. & Ng, Serena
(ReDIF-article, eee:jfinec:v:83:y:2007:i:1:p:171-222) - The macroeconomic effects of government debt in a stochastic growth model
Journal of Monetary Economics, Elsevier (1996)
by Ludvigson, Sydney
(ReDIF-article, eee:moneco:v:38:y:1996:i:1:p:25-45) - Time-varying risk premia and the cost of capital: An alternative implication of the Q theory of investment
Journal of Monetary Economics, Elsevier (2002)
by Lettau, Martin & Ludvigson, Sydney
(ReDIF-article, eee:moneco:v:49:y:2002:i:1:p:31-66) - An estimation of economic models with recursive preferences
LSE Research Online Documents on Economics, London School of Economics and Political Science, LSE Library (2007)
by Chen, Xiaohong & Favilukis, Jack & Ludvigson, Sydney C.
(ReDIF-paper, ehl:lserod:24502) - An estimation of economic models with recursive preferences
LSE Research Online Documents on Economics, London School of Economics and Political Science, LSE Library (2013)
by Chen, Xiaohong & Favilukis, Jack & Ludvigson, Sydney C.
(ReDIF-paper, ehl:lserod:37392) - The declining equity premium: what role does macroeconomic risk play?
Proceedings, Board of Governors of the Federal Reserve System (U.S.) (2005)
by Martin Lettau & Sydney C. Ludvigson & Jessica A. Wachter
(ReDIF-article, fip:fedgpr:y:2005:x:27) - Housing, credit and consumer expenditure: commentary
Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City (2007)
by Sydney C. Ludvigson
(ReDIF-article, fip:fedkpr:y:2007:p:335-350) - Does consumer confidence forecast household expenditure? a sentiment index horse race
Economic Policy Review, Federal Reserve Bank of New York (1998)
by Jason Bram & Sydney C. Ludvigson
(ReDIF-article, fip:fednep:y:1998:i:jun:p:59-78:n:v.4no.2) - How important is the stock market effect on consumption?
Economic Policy Review, Federal Reserve Bank of New York (1999)
by Sydney C. Ludvigson & Charles Steindel
(ReDIF-article, fip:fednep:y:1999:i:jul:p:29-51:n:v.5no.2) - Monetary policy transmission through the consumption-wealth channel
Economic Policy Review, Federal Reserve Bank of New York (2002)
by Martin Lettau & Sydney C. Ludvigson & Charles Steindel
(ReDIF-article, fip:fednep:y:2002:i:may:p:117-133:n:v.8no.1) - Consumption and credit: a model of time-varying liquidity constraints
Research Paper, Federal Reserve Bank of New York (1996)
by Sydney C. Ludvigson
(ReDIF-paper, fip:fednrp:9624) - The channel of monetary transmission to demand: evidence from the market for automobile credit
Research Paper, Federal Reserve Bank of New York (1996)
by Sydney C. Ludvigson
(ReDIF-paper, fip:fednrp:9625) - Consumer sentiment and household expenditure: reevaluating the forecasting equations
Research Paper, Federal Reserve Bank of New York (1996)
by Sydney C. Ludvigson
(ReDIF-paper, fip:fednrp:9636) - Does consumer confidence forecast household expenditure?: A sentiment index horse race
Research Paper, Federal Reserve Bank of New York (1997)
by Jason Bram & Sydney C. Ludvigson
(ReDIF-paper, fip:fednrp:9708) - Approximation bias in linearized Euler equations
Research Paper, Federal Reserve Bank of New York (1997)
by Sydney C. Ludvigson & Christina H. Paxson
(ReDIF-paper, fip:fednrp:9712) - Elasticities of substitution in real business cycle models with home production
Research Paper, Federal Reserve Bank of New York (1997)
by John Y. Campbell & Sydney C. Ludvigson
(ReDIF-paper, fip:fednrp:9733) - How important is the stock market effect on consumption?
Research Paper, Federal Reserve Bank of New York (1998)
by Sydney C. Ludvigson & Charles Steindel
(ReDIF-paper, fip:fednrp:9821) - A primer on the economics and time series econometrics of wealth effects: a comment
Staff Reports, Federal Reserve Bank of New York (2001)
by Nathan Barczi & Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, fip:fednsr:131) - Consumption, aggregate wealth and expected stock returns
Staff Reports, Federal Reserve Bank of New York (1999)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, fip:fednsr:77) - Resurrecting the (C)CAPM: a cross-sectional test when risk premia are time-varying
Staff Reports, Federal Reserve Bank of New York (1999)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, fip:fednsr:93) - An Estimation of Economic Models with Recursive
FMG Discussion Papers, Financial Markets Group (2007)
by Sydney C. Ludvigson & Xiaohong Chen & Jack Favilukis
(ReDIF-paper, fmg:fmgdps:dp603) - Elasticities of Substitution in Real Business Cycle Models with Home Production
Harvard Institute of Economic Research Working Papers, Harvard - Institute of Economic Research (2000)
by John Y. Campbell & Sydney Ludvigson
(ReDIF-paper, fth:harver:1900) - Elasticities of Substitution in Real Business Cycle Models with Home Production
Scholarly Articles, Harvard University Department of Economics (2001)
by Campbell, John & Ludvigson, Sydney
(ReDIF-paper, hrv:faseco:3163262) - An estimation of economic models with recursive preferences
CeMMAP working papers, Centre for Microdata Methods and Practice, Institute for Fiscal Studies (2012)
by Xiaohong Chen & Jack Favilukis & Sydney Ludvigson
(ReDIF-paper, ifs:cemmap:32/12) - Land of addicts? an empirical investigation of habit-based asset pricing models
Journal of Applied Econometrics, John Wiley & Sons, Ltd. (2009)
by Xiaohong Chen & Sydney C. Ludvigson
(ReDIF-article, jae:japmet:v:24:y:2009:i:7:p:1057-1093) - The Channel of Monetary Transmission to Demand: Evidence from the Market for Automobile Credit
Journal of Money, Credit and Banking, Blackwell Publishing (1998)
by Ludvigson, Sydney
(ReDIF-article, mcb:jmoncb:v:30:y:1998:i:3:p:365-83) - Elasticities of Substitution in Real Business Cycle Models with Home Protection
Journal of Money, Credit and Banking, Blackwell Publishing (2001)
by Campbell, John Y & Ludvigson, Sydney
(ReDIF-article, mcb:jmoncb:v:33:y:2001:i:4:p:847-75) - International Capital Flows and House Prices: Theory and Evidence
NBER Chapters, National Bureau of Economic Research, Inc (2012)
by Jack Favilukis & David Kohn & Sydney C. Ludvigson & Stijn Van Nieuwerburgh
(ReDIF-chapter, nbr:nberch:12626) - Shocks and Crashes
NBER Chapters, National Bureau of Economic Research, Inc (2013)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-chapter, nbr:nberch:12932) - Approximation Bias in Linearized Euler Equations
NBER Technical Working Papers, National Bureau of Economic Research, Inc (1999)
by Sydney Ludvigson & Christina H. Paxson
(ReDIF-paper, nbr:nberte:0236) - The Declining Equity Premium: What Role Does Macroeconomic Risk Play?
NBER Working Papers, National Bureau of Economic Research, Inc (2004)
by Martin Lettau & Sydney C. Ludvigson & Jessica A. Wachter
(ReDIF-paper, nbr:nberwo:10270) - Land of Addicts? An Empirical Investigation of Habit-Based Asset Pricing Behavior
NBER Working Papers, National Bureau of Economic Research, Inc (2004)
by Xiaohong Chen & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:10503) - The Empirical Risk-Return Relation: A Factor Analysis Approach
NBER Working Papers, National Bureau of Economic Research, Inc (2005)
by Sydney C. Ludvigson & Serena Ng
(ReDIF-paper, nbr:nberwo:11477) - Euler Equation Errors
NBER Working Papers, National Bureau of Economic Research, Inc (2005)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:11606) - Investor Information, Long-Run Risk, and the Term Structure of Equity
NBER Working Papers, National Bureau of Economic Research, Inc (2007)
by Mariano M. Croce & Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:12912) - A Factor Analysis of Bond Risk Premia
NBER Working Papers, National Bureau of Economic Research, Inc (2009)
by Sydney C. Ludvigson & Serena Ng
(ReDIF-paper, nbr:nberwo:15188) - The Macroeconomic Effects of Housing Wealth, Housing Finance, and Limited Risk-Sharing in General Equilibrium
NBER Working Papers, National Bureau of Economic Research, Inc (2010)
by Jack Favilukis & Sydney C. Ludvigson & Stijn Van Nieuwerburgh
(ReDIF-paper, nbr:nberwo:15988) - Advances in Consumption-Based Asset Pricing: Empirical Tests
NBER Working Papers, National Bureau of Economic Research, Inc (2011)
by Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:16810) - Shocks and Crashes
NBER Working Papers, National Bureau of Economic Research, Inc (2011)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:16996) - An Estimation of Economic Models with Recursive Preferences
NBER Working Papers, National Bureau of Economic Research, Inc (2011)
by Xiaohong Chen & Jack Favilukis & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:17130) - International Capital Flows and House Prices: Theory and Evidence
NBER Working Papers, National Bureau of Economic Research, Inc (2012)
by Jack Favilukis & David Kohn & Sydney C. Ludvigson & Stijn Van Nieuwerburgh
(ReDIF-paper, nbr:nberwo:17751) - Measuring Uncertainty
NBER Working Papers, National Bureau of Economic Research, Inc (2013)
by Kyle Jurado & Sydney C. Ludvigson & Serena Ng
(ReDIF-paper, nbr:nberwo:19456) - Origins of Stock Market Fluctuations
NBER Working Papers, National Bureau of Economic Research, Inc (2014)
by Daniel L. Greenwald & Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:19818) - Foreign Ownership of U.S. Safe Assets: Good or Bad?
NBER Working Papers, National Bureau of Economic Research, Inc (2014)
by Jack Favilukis & Sydney C. Ludvigson & Stijn Van Nieuwerburgh
(ReDIF-paper, nbr:nberwo:19917) - Capital Share Risk in U.S. Asset Pricing
NBER Working Papers, National Bureau of Economic Research, Inc (2014)
by Martin Lettau & Sydney C. Ludvigson & Sai Ma
(ReDIF-paper, nbr:nberwo:20744) - Uncertainty and Business Cycles: Exogenous Impulse or Endogenous Response?
NBER Working Papers, National Bureau of Economic Research, Inc (2015)
by Sydney C. Ludvigson & Sai Ma & Serena Ng
(ReDIF-paper, nbr:nberwo:21803) - Monetary Policy and Asset Valuation
NBER Working Papers, National Bureau of Economic Research, Inc (2016)
by Francesco Bianchi & Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:22572) - Shock Restricted Structural Vector-Autoregressions
NBER Working Papers, National Bureau of Economic Research, Inc (2017)
by Sydney C. Ludvigson & Sai Ma & Serena Ng
(ReDIF-paper, nbr:nberwo:23225) - Drivers of the Great Housing Boom-Bust: Credit Conditions, Beliefs, or Both?
NBER Working Papers, National Bureau of Economic Research, Inc (2018)
by Josue Cox & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:25285) - Characteristics of Mutual Fund Portfolios: Where Are the Value Funds?
NBER Working Papers, National Bureau of Economic Research, Inc (2018)
by Martin Lettau & Sydney C. Ludvigson & Paulo Manoel
(ReDIF-paper, nbr:nberwo:25381) - How the Wealth Was Won: Factors Shares as Market Fundamentals
NBER Working Papers, National Bureau of Economic Research, Inc (2019)
by Daniel L. Greenwald & Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:25769) - COVID-19 and The Macroeconomic Effects of Costly Disasters
NBER Working Papers, National Bureau of Economic Research, Inc (2020)
by Sydney C. Ludvigson & Sai Ma & Serena Ng
(ReDIF-paper, nbr:nberwo:26987) - Belief Distortions and Macroeconomic Fluctuations
NBER Working Papers, National Bureau of Economic Research, Inc (2020)
by Francesco Bianchi & Sydney C. Ludvigson & Sai Ma
(ReDIF-paper, nbr:nberwo:27406) - What Explains the COVID-19 Stock Market?
NBER Working Papers, National Bureau of Economic Research, Inc (2020)
by Josue Cox & Daniel L. Greenwald & Sydney C. Ludvigson
(ReDIF-paper, nbr:nberwo:27784) - Monetary-Based Asset Pricing: A Mixed-Frequency Structural Approach
NBER Working Papers, National Bureau of Economic Research, Inc (2022)
by Francesco Bianchi & Sydney C. Ludvigson & Sai Ma
(ReDIF-paper, nbr:nberwo:30072) - What Hundreds of Economic News Events Say About Belief Overreaction in the Stock Market
NBER Working Papers, National Bureau of Economic Research, Inc (2024)
by Francesco Bianchi & Sydney C. Ludvigson & Sai Ma
(ReDIF-paper, nbr:nberwo:32301) - Elasticities of Substitution in Real Business Cycle Models with Home Production
NBER Working Papers, National Bureau of Economic Research, Inc (1998)
by John Y. Campbell & Sydney Ludvigson
(ReDIF-paper, nbr:nberwo:6763) - Expected Returns and Expected Dividend Growth
NBER Working Papers, National Bureau of Economic Research, Inc (2003)
by Martin Lettau & Sydney Ludvigson
(ReDIF-paper, nbr:nberwo:9605) - Understanding Trend and Cycle in Asset Values: Reevaluating the Wealth Effect on Consumption
NBER Working Papers, National Bureau of Economic Research, Inc (2003)
by Martin Lettau & Sydney Ludvigson
(ReDIF-paper, nbr:nberwo:9848) - The Declining Equity Premium: What Role Does Macroeconomic Risk Play?
The Review of Financial Studies, Society for Financial Studies (2008)
by Martin Lettau & Sydney C. Ludvigson & Jessica A. Wachter
(ReDIF-article, oup:rfinst:v:21:y:2008:i:4:p:1653-1687) - Macro Factors in Bond Risk Premia
The Review of Financial Studies, Society for Financial Studies (2009)
by Sydney C. Ludvigson & Serena Ng
(ReDIF-article, oup:rfinst:v:22:y:2009:i:12:p:5027-5067) - Investor Information, Long-Run Risk, and the Term Structure of Equity
The Review of Financial Studies, Society for Financial Studies (2015)
by Mariano M. Croce & Martin Lettau & Sydney C. Ludvigson
(ReDIF-article, oup:rfinst:v:28:y:2015:i:3:p:706-742.) - Code and data files for "Euler Equation Errors"
Computer Codes, Review of Economic Dynamics (2008)
by Martin Lettau & Sydney Ludvigson
(ReDIF-software, red:ccodes:08-106) - The Research Agenda: Sydney Ludvigson on Empirical Evaluation of Economic Theories of Risk Premia
EconomicDynamics Newsletter, Review of Economic Dynamics (2008)
by Sydney Ludvigson
(ReDIF-article, red:ecodyn:v:9:y:2008:i:2:agenda) - Euler Equation Errors
Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics (2009)
by Martin Lettau & Sydney Ludvigson
(ReDIF-article, red:issued:08-106) - The Declining Equity Premium: What Role Does Macroeconomic Risk Play?
2004 Meeting Papers, Society for Economic Dynamics (2004)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-paper, red:sed004:644) - Land of Addicts? An Empirical Investigation of Habit-Based Asset Pricing Models
2004 Meeting Papers, Society for Economic Dynamics (2004)
by Sydney Ludvigson & Xiaohong Chen
(ReDIF-paper, red:sed004:692) - Euler Equation Errors
2005 Meeting Papers, Society for Economic Dynamics (2005)
by Sydney C. Ludvigson & Martin Lettau
(ReDIF-paper, red:sed005:487) - The Empirical Risk-Return Relation: a factor analysis approach
2006 Meeting Papers, Society for Economic Dynamics (2006)
by Sydney Ludvigson & Serena Ng
(ReDIF-paper, red:sed006:236) - Investor Information, Long-Run Risk, and the Duration fo Risky Assets
2006 Meeting Papers, Society for Economic Dynamics (2006)
by Mariano M. Croce & Martin Lettau & Sydney Ludvigson
(ReDIF-paper, red:sed006:628) - An Estimation of Economic Models with Recursive Preferences
2007 Meeting Papers, Society for Economic Dynamics (2007)
by Sydney Ludvigson & Jack Favalukus & Xiaohong Chen
(ReDIF-paper, red:sed007:543) - The Macroeconomic E¤ects of Housing Wealth, Housing Finance, and Limited Risk-Sharing in General Equilibrium
2010 Meeting Papers, Society for Economic Dynamics (2010)
by Sydney Ludvigson & Stijn Van Nieuwerburgh & Jack Favilukis
(ReDIF-paper, red:sed010:733) - Foreign Ownership of U.S. Safe Assets: Good or Bad?
2012 Meeting Papers, Society for Economic Dynamics (2012)
by Sydney Ludvigson & Stijn Van Nieuwerburgh & Jack Favilukis
(ReDIF-paper, red:sed012:297) - The Origins of Stock Market Fluctuations
2014 Meeting Papers, Society for Economic Dynamics (2014)
by Sydney Ludvigson & Martin Lettau & Daniel Greenwald
(ReDIF-paper, red:sed014:542) - Consumption And Credit: A Model Of Time-Varying Liquidity Constraints
The Review of Economics and Statistics, MIT Press (1999)
by Sydney Ludvigson
(ReDIF-article, tpr:restat:v:81:y:1999:i:3:p:434-447) - Approximation Bias In Linearized Euler Equations
The Review of Economics and Statistics, MIT Press (2001)
by Sydney Ludvigson & Christina H. Paxson
(ReDIF-article, tpr:restat:v:83:y:2001:i:2:p:242-256) - Resurrecting the (C)CAPM: A Cross-Sectional Test When Risk Premia Are Time-Varying
Journal of Political Economy, University of Chicago Press (2001)
by Martin Lettau & Sydney Ludvigson
(ReDIF-article, ucp:jpolec:v:109:y:2001:i:6:p:1238-1287) - Shocks and Crashes
NBER Macroeconomics Annual, University of Chicago Press (2014)
by Martin Lettau & Sydney C. Ludvigson
(ReDIF-article, ucp:macann:doi:10.1086/674605)