Keiko Ito
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Affiliations
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Chiba University
/ Faculty of Law and Economics
Research profile
author of:
- Clusters and Economic Growth in Asia edited by Sören Eriksson (ed.) Edward Elgar , Cheltenham , 2013 Pp. 190. ISBN 978 0 85793 008 8 (RePEc:bla:apacel:v:28:y:2014:i:1:p:193-194)
by Keiko Ito - Industry-Level Competitiveness, Productivity and Effective Exchange Rates in East Asia (RePEc:bla:asiaec:v:29:y:2015:i:2:p:181-214)
by Keiko Ito & Junko Shimizu - Exporting and Upgrading of Product Portfolio: Evidence from Korea, Japan and Indonesia (RePEc:bla:asiaec:v:30:y:2016:i:4:p:349-373)
by Chin Hee Hahn & Keiko Ito & Dionisius Narjoko - Comment on “Supply Chain Decoupling: Geopolitical Debates and Economic Dynamism in East Asia” (RePEc:bla:asiapr:v:19:y:2024:i:1:p:80-81)
by Keiko Ito - Exchange Rate Uncertainty and R&D Investment: Evidence from Japanese Firms (RePEc:bla:deveco:v:55:y:2017:i:2:p:56-74)
by Keiko Ito & Shoko Haneda - Overseas Expansion and Domestic Business Restructuring in Japanese Firms (RePEc:bla:deveco:v:55:y:2017:i:2:p:75-104)
by Keiko Ito & Kenta Ikeuchi - The Effect of Exporting on Creative Destruction and a Plant's Average Product Characteristics in Japan and Korea (RePEc:bla:deveco:v:58:y:2020:i:3:p:195-226)
by Chin Hee Hahn & Keiko Ito - Overseas Market Information And Firms' Export Decisions (RePEc:bla:ecinqu:v:53:y:2015:i:3:p:1671-1688)
by Tomohiko Inui & Keiko Ito & Daisuke Miyakawa - Global Fixed Capital Investment by Multinational Firms (RePEc:bla:econom:v:80:y:2013:i:318:p:274-299)
by René Belderbos & Kyoji Fukao & Keiko Ito & Wilko Letterie - Export Experience, Product Differentiation and Firm Survival in Export Markets (RePEc:bla:jecrev:v:68:y:2017:i:2:p:217-231)
by Tomohiko Inui & Keiko Ito & Daisuke Miyakawa - Determinants of the Profitability of Japanese Manufacturing Affiliates in China and Other Regions: Does Localisation of Procurement, Sales and Management Matter? (RePEc:bla:worlde:v:33:y:2010:i:12:p:1639-1671)
by Keiko Ito & Kyoji Fukao - Global Sourcing and Domestic Production Networks (RePEc:ces:ceswps:_6658)
by Taiji Furusawa & Tomohiko Inui & Keiko Ito & Heiwai Tang - Do Japanese Firms Fail to Catch up in Localization? An Empirical Analysis Based on Affiliate-level Data of Japanese Firms and a Case Study of Automobile Industry in China (RePEc:eab:microe:21890)
by Kyoji Fukao & Keiko Ito & Shigesaburo Kabe & Deqiang Liu & Fumihide Takeuchi - Foreign ownership and plant productivity in the Thai automobile industry in 1996 and 1998: a conditional quantile analysis (RePEc:eee:asieco:v:15:y:2004:i:2:p:321-353)
by Ito, Keiko - The impact of the strengthening of export controls on Japanese exports of dual-use goods (RePEc:eee:inteco:v:174:y:2023:i:c:p:160-179)
by Hayakawa, Kazunobu & Ito, Keiko & Fukao, Kyoji & Deseatnicov, Ivan - Global knowledge flow and Japanese multinational firms’ offshore R&D allocation and innovation (RePEc:eee:japwor:v:59:y:2021:i:c:s0922142521000372)
by Ito, Keiko & Ikeuchi, Kenta & Daiko, Taro - Vertical intra-industry trade and foreign direct investment in East Asia (RePEc:eee:jjieco:v:17:y:2003:i:4:p:468-506)
by Fukao, Kyoji & Ishido, Hikari & Ito, Keiko - Do out-in M&As bring higher TFP to Japan? An empirical analysis based on micro-data on Japanese manufacturing firms (RePEc:eee:jjieco:v:19:y:2005:i:2:p:272-301)
by Fukao, Kyoji & Ito, Keiko & Kwon, Hyeog Ug - Foreign direct investment and trade in Japan: An empirical analysis based on the Establishment and Enterprise Census for 1996 (RePEc:eee:jjieco:v:19:y:2005:i:3:p:414-455)
by Ito, Keiko & Fukao, Kyoji - Organizational and human resource management and innovation: Which management practices are linked to product and/or process innovation? (RePEc:eee:respol:v:47:y:2018:i:1:p:194-208)
by Haneda, Shoko & Ito, Keiko - Global value chains and domestic innovation (RePEc:eee:respol:v:52:y:2023:i:3:s0048733322002207)
by Ito, Keiko & Ikeuchi, Kenta & Criscuolo, Chiara & Timmis, Jonathan & Bergeaud, Antonin - Product market efficiencies and TFP: a comparative study of Japanese and Korean firms (RePEc:elg:eechap:17837_5)
by Keiko Ito & YoungGak Kim - Foreign Direct Investment in Japan: Empirical Analysis Based on the Establishment and Enterprise Census (RePEc:elg:eechap:2845_6)
by Keiko Ito & Kyoji Fukao - Expansion of Overeas Production and the Impact on Employment in Domestic Supporting Industries: An Empirical Analysis Based on Buyer-Supplier Transaction Relationships (RePEc:era:chaptr:2012-rpr-04-09)
by Keiko Ito & Ayumu Tanaka - Japanese Small and Medium-Sized Enterprises’ Export Decisions: The Role of Overseas Market Information (RePEc:era:chaptr:2013-rpr-03-2)
by Tomohiko Inui & Keiko Ito & Daisuke Miyakawa - Dynamics of Firm Selection Process in Globalized Economies (RePEc:era:eriabk:2011-rpr-03)
by Chin Hee Hahn & Dionisius Narjoko & Heiwai Tang & Yifan Zhang & Tomohiko Inui & Keiko Ito & Keishi Shoji & Nguyen Dinh Chuc & Nguyen Ngoc Anh & Li Hai Anh & Nguyen Thi Phuong Mai & Sadayuki Takii & Di - Impact of Globalization on Labor Market (RePEc:era:eriabk:2012-rpr-04)
by Chin Hee Hahn & Yong-Seok Choi & Sadayuki Takii & Dionisius Narjoko & Rafaelita M. Aldaba & Shandre M. Thangavelu & Archanun Kohpaiboon & Juthathip Jongwanich & Alfons Palangkaraya & Cassey Lee & Keik - Sources of Learning-by-Exporting Effects: Does Exporting Promote Innovation? (RePEc:era:wpaper:dp-2012-06)
by Keiko ITO - Japanese Small and Medium-sized Enterprises Export Decisions: The Role Overseas Market Information (RePEc:era:wpaper:dp-2014-16)
by Tomohiko INUI & Keiko ITO & Daisuke MIYAKAWA - Inward Foreign Direct Investment and Market Concentration in Japan: New Statistics at the 3-Digit Industry Level Based on Micro-Data of the Establishment and Enterprise(in Japanese) (RePEc:esj:esridp:005)
by FUKAO Kyoji & ITO Keiko - Exporters in China: A Comparison with Japanese Exporters(in Japanese) (RePEc:esj:esridp:274)
by ITO Keiko & INUI Tomohiko & KWON Hyeog Ug & TODO Yasuyuki - Firms' Export Behavior and the Role of Bank' Overseas Information (RePEc:esj:esridp:297)
by INUI Tomohiko & ITO Keiko & MIYAKAWA Daisuke & SHOJI Keishi - Entry of Foreign Multinational Firms and Productivity Growth of Domestic Firms: An Empirical Analysis Based on the Firm-Level Data Underlying the Basic Survey on Business Structure and Activities(in J (RePEc:esj:esriea:186a)
by Keiko ITO - Information and Export Decisions: Bank’s Role as a Conduit of Information (in Japanese) (RePEc:esj:esriea:188a)
by Tomohiko INUI & Keiko ITO & Daisuke MIYAKAWA & Keishi SHOJI - Exporters in China (RePEc:esj:esriea:197a)
by Keiko ITO & Tomohiko INUI & Hyeog Ug KWON & Yasuyuki TODO - Vertical Intra-Industry Trade and Foreign Direct Investment in East Asia (RePEc:eti:dpaper:03001)
by Kyoji Fukao & Hikari Ishido & Keiko Ito - Physical and Human Capital Deepening and New Trade Patterns in Japan (RePEc:eti:dpaper:04002)
by Kyoji Fukao & Keiko Ito - Do Out-In M&As Bring Higher TFP to Japan? An Empirical Analysis Based on Micro-data on Japanese Manufacturing Firms (RePEc:eti:dpaper:05005)
by Kyoji Fukao & Keiko Ito & Hyeog Ug Kwon - Determinants of the Profitability of Japanese Manufacturing Affiliates in China and Other Regions: Does Localization of Procurement, Sales, and Management Matter? (RePEc:eti:dpaper:07001)
by ITO Keiko & FUKAO Kyoji - Estimation Procedures and TFP Analysis of the JIP Database 2006 Provisional Version (RePEc:eti:dpaper:07003)
by FUKAO Kyoji & HAMAGATA Sumio & INUI Tomohiko & ITO Keiko & Hyeog Ug KWON & MAKINO Tatsuji & MIYAGAWA Tsutomu & NAKANISHI Yasuo & TOKUI Joji - The evolution of the productivity dispersion of firms - A reevaluation of its determinants in the case of Japan (RePEc:eti:dpaper:08014)
by ITO Keiko & Sebastien LECHEVALIER - Does Material and Service Offshoring Improve Domestic Productivity? Evidence from Japanese manufacturing industries (RePEc:eti:dpaper:10010)
by ITO Keiko & TANAKA Kiyoyasu - Output Quality, Skill Intensity, and Factor Contents of Trade: An empirical analysis based on microdata of the Census of Manufactures (RePEc:eti:dpaper:10028)
by FUKAO Kyoji & ITO Keiko - Why Do Some Firms Persistently Outperform Others? An investigation of the interactions between innovation and export strategies (RePEc:eti:dpaper:10037)
by ITO Keiko & LECHEVALIER Se'bastien - Global Fixed Capital Investment by Multinational Firms (RePEc:eti:dpaper:10044)
by Ren� BELDERBOS & FUKAO Kyoji & ITO Keiko & Wilko LETTERIE - Entry of Foreign Multinational Firms and Productivity Growth of Domestic Firms: The case of Japanese firms (RePEc:eti:dpaper:11063)
by ITO Keiko - Does New Entry Drive Out Incumbents? Evidence from establishment-level data in Japan (RePEc:eti:dpaper:12034)
by ITO Keiko & KATO Masatoshi - R&D Investment and Productivity: A comparative study of Japanese and Korean firms (RePEc:eti:dpaper:13043)
by YoungGak KIM & ITO Keiko - Industry-Level Competitiveness, Productivity, and Effective Exchange Rates in East Asia (RePEc:eti:dpaper:13094)
by ITO Keiko & SHIMIZU Junko - The Impact of Multinationals' Overseas Expansion on Employment at Suppliers at Home: New evidence from firm-level transaction relationship data for Japan (RePEc:eti:dpaper:14011)
by ITO Keiko & TANAKA Ayumu - Lender Banks' Provision of Overseas Market Information: Evidence from Japanese small and medium-sized enterprises' export dynamics (RePEc:eti:dpaper:14064)
by INUI Tomohiko & ITO Keiko & MIYAKAWA Daisuke - Reconstructing China's Supply-Use and Input-Output Tables in Time Series (RePEc:eti:dpaper:15004)
by Harry WU & ITO Keiko - Export Experience, Product Differentiation, and Firm Survival in Export Markets (RePEc:eti:dpaper:15086)
by INUI Tomohiko & ITO Keiko & MIYAKAWA Daisuke - Offshoring, Relationship-Specificity, and Domestic Production Networks (RePEc:eti:dpaper:15122)
by FURUSAWA Taiji & ITO Keiko & INUI Tomohiko & Heiwai TANG - Global Sourcing and Domestic Production Networks (RePEc:eti:dpaper:18004)
by FURUSAWA Taiji & INUI Tomohiko & ITO Keiko & Heiwai TANG - Global Value Chains and Domestic Innovation (RePEc:eti:dpaper:19028)
by ITO Keiko & IKEUCHI Kenta & Chiara CRISCUOLO & Jonathan TIMMIS & Antonin BERGEAUD - The Effect of Exporting on Product Compositional Changes and a Manufacturing Plant's Average Product Characteristics in Japan (RePEc:eti:dpaper:20038)
by ITO Keiko & Chin Hee HAHN - Till Death Do Us Part: Relationship shocks, supply chain organization and firm performance (RePEc:eti:dpaper:23049)
by Timothy DESTEFANO & ITO Keiko & Richard KNELLER & Jonathan TIMMIS - Competition with Imports from Low- and Lower-Middle-Income Countries and its Impact on the Growth of Japanese Companies: Empirical Analysis Based on Micro-Data of the "Basic Survey of Japanese Bu (RePEc:eti:rdpsjp:05028)
by ITO Keiko - Entry of Foreign Multinational Firms and Productivity Growth of Domestic Firms: The case for Japanese firms (Japanese) (RePEc:eti:rdpsjp:11034)
by ITO Keiko - Sources of Learning-by-Exporting Effects: Does exporting promote innovation? (Japanese) (RePEc:eti:rdpsjp:11066)
by ITO Keiko - Information and Export Decisions: Banks as a conduit of information (Japanese) (RePEc:eti:rdpsjp:12025)
by INUI Tomohiko & ITO Keiko & MIYAKAWA Daisuke & SHOJI Keishi - Global Performance of Japanese Manufacturing Multinational Firms: Productivity comparison between parent firms and their affiliates abroad (Japanese) (RePEc:eti:rdpsjp:13023)
by ITO Keiko & TANAKA Kiyoyasu - Productivity Analysis Based on Microdata of Government Statistics (Japanese) (RePEc:eti:rpdpjp:10009)
by ITO Keiko & MATSUURA Toshiyuki - Progress of Digitalization and Industrial Revitalization: Employment and productivity dynamics of firms in Japan (Japanese) (RePEc:eti:rpdpjp:23007)
by IKEUCHI Kenta & ITO Keiko & KIM Younggak & KWON Hyeog Ug - Why some firms persistently out-perform others? (RePEc:hal:journl:halshs-00657002)
by Sébastien Lechevalier & Keiko Ito - The Vertical Division of Labor and Japanese Outward FDI―Impacts on Human Capital Deepening in Japan― (RePEc:hit:ecorev:v:56:y:2005:i:4:p:331-347)
by Ito, Keiko & Fukao, Kyoji - Are Japanese Firms Failing to Catch up in Localization? An Empirical Analysis Based on Affiliate-level Data of Japanese Firms and a Case Study of the Automobile Industry in China (RePEc:hit:hitcei:2006-16)
by Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ & Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ & Kabe, Shigesaburo & 可部, 繁三郎 & Liu, Deqiang & Takeuchi, Fumihide - Cross-Border Acquisitions and Target Firms' Performance: Evidence from Japanese Firm-Level Data (RePEc:hit:hitcei:2006-18)
by Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ & Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ & Kwon, Hyeog Ug & Takizawa, Miho - The Impact of Outsourcing on the Japanese and South Korean Labor Markets: International Outsourcing of Intermediate Inputs and Assembly in East Asia (RePEc:hit:hitcei:2008-27)
by Ahn, Sanghoon & Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ & Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ - Technological Decoupling Between the U.S. and China (RePEc:hit:hituec:756)
by DESEATNICOV, Ivan & FUKAO, Kyoji & HAYAKAWA, Kazunobu & ITO, Keiko & KUCHERYAVYY, Konstantin - Foreign Direct Investment and Service Trade: The Case of Japan (RePEc:hit:hituec:a394)
by Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ & Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ - 対日直接投資 : 事業所・企業統計調査個票データにもとづく実証分析 (RePEc:hit:hituec:a421)
by 伊藤, 恵子 & Ito, Keiko & イトウ, ケイコ & 深尾, 京司 & Fukao, Kyoji & フカオ, キョウジ - Vertical Intra-Industry Trade and Foreign Direct Investment in East Asia (RePEc:hit:hituec:a434)
by Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ & Ishido, Hikari & 石戸, 光 & イシド, ヒカリ & Ito, Keiko & 伊藤, 恵子 - 東アジアにおける垂直的産業内貿易と直接投資 (RePEc:hit:hituec:a440)
by 石戸, 光 & Ishido, Hikari & イシド, ヒカリ & 伊藤, 恵子 & Ito, Keiko & イトウ, ケイコ & 深尾, 京司 & Fukao, Kyoji & 吉池, 喜政 & ヨシイケ, ヨシマサ - Foreign Direct Investment and Trade in Japan: An Empirical Analysis Based on the Establishment and Enterprise Census for 1996 (RePEc:hit:hituec:a441)
by Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ & Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ - Vertical Intra-Industry Trade and the Division of Labor in East Asia (RePEc:hit:hituec:a444)
by Ito, Keiko & 伊藤, 恵子 & イトウ, ケイコ & Fukao, Kyoji & 深尾, 京司 & フカオ, キョウジ - The Impact of Outsourcing on the Japanese and South Korean Labor Markets: International Outsourcing of Intermediate Inputs and Assembly in East Asia (RePEc:hst:ghsdps:gd08-001)
by Sanghoon Ahn & Kyoji Fukao & Keiko Ito - An International Comparison of the TFP Levels and the Productivity Convergence of Japanese, Korean, Taiwanese and Chinese Listed Firms (RePEc:hst:ghsdps:gd09-089)
by Kyoji Fukao & Tomohiko Inui & Keiko Ito & Young Gak Kim & Tangjun Yuan - Investment, Production and Trade Networks as Drivers of East Asian Integration (RePEc:hst:ghsdps:gd09-117)
by Ralph Paprzycki & Keiko Ito - An International Comparison of the TFP Levels and the Productivity Convergence of Japanese, Korean, Taiwanese, and Chinese Listed Firms (Extended Version) (RePEc:hst:ghsdps:gd10-168)
by Kyoji Fukao & Tomohiko Inui & Keiko Ito & YoungGak Kim & Tangjun Yuan - Physical and Human Capital Deepening and New Trade Patterns in Japan (RePEc:hst:hstdps:d03-03)
by Kyoji Fukao & Keiko Ito - Do Out-In M&As Bring Higher TFP to Japan?: An Empirical Analysis Based on Micro-data on Japanese Manufacturing Firms (RePEc:hst:hstdps:d04-41)
by Kyoji Fukao & Keiko Ito & Hyeog Ug Kwon - Plant Productivity, Keiretsu, and Agglomeration in the Japanese Automobile Industry: An Empirical Analysis Based on Micro-Data of Census of Manufactures 1981-1996 (RePEc:hst:hstdps:d04-51)
by Keiko Ito - Gaishikei kigyo ha nigeashi ga hayainoka?: Jigyosho no taishutsu to koyo seichouritu ni kansuru jisshobunseki (in Japanese) (RePEc:hst:hstdps:d05-112)
by Hyoeg Ug Kwon & Keiko Ito & Kyoji Fukao - The Vertical Division of Labor and Japanese Outward FDI: Impacts on Human Capital Deepening in Japan (in Japanese) (RePEc:hst:hstdps:d05-115)
by Keiko Ito & Kyoji Fukao - Tainichi chokusetsutoshi ha nihon no seisansei koujo wo motarasuka? "Kigyokatsudo kihon chosa"kohyo data ni Motoduku jisshobunseki (in Japanese) (RePEc:hst:hstdps:d05-88)
by Hyeog Ug Kwon & Kyoji Fukao & Keiko Ito - Are Japanese Firms Failing to Catch up in Localization? An Empirical Analysis Based on Affiliate-level Data of Japanese Firms and a Case Study of the Automobile Industry in China (RePEc:hst:hstdps:d06-191)
by Kyoji Fukao & Keiko Ito & Shigesaburo Kabe & Deqiang Liu & Fumihide Takeuchi - The impact of the U.S.-China conflict and the strengthening of export controls on Japanese exports (RePEc:jet:dpaper:dpaper852)
by Hayakawa, Kazunobu & Ito, Keiko & Fukao, Kyoji & Ivan, Deseatnicov - Does new entry drive out incumbents? The varying roles of establishment size across sectors (RePEc:kap:sbusec:v:46:y:2016:i:1:p:57-78)
by Keiko Ito & Masatoshi Kato - Margins, concentration, and the performance of firms in international trade: Evidence from Japanese customs data (RePEc:keo:dpaper:2024-017)
by Keiko Ito & Masahiro Endoh & Naoto Jinji & Toshiyuki Matsuura & Toshihiro Okubo & Akira Sasahara - The Impact of Multinationals’ Overseas Expansion on Employment at Suppliers at Home: New Evidence from Firm-Level Transaction Relationship Data for Japan (RePEc:kue:dpaper:e-13-008)
by Keiko Ito & Ayumu Tanaka - Physical and Human Capital Deepening and New Trade Patterns in Japan (RePEc:nbr:nberch:0189)
by Keiko Ito & Kyoji Fukao - Foreign Direct Investment and Services Trade: The Case of Japan (RePEc:nbr:nberch:10166)
by Kyoji Fukao & Keiko Ito - Foreign Ownership and Productivity in the Indonesian Automobile Industry: Evidence from Establishment Data for 1990-99 (RePEc:nbr:nberch:10749)
by Keiko Ito - Cross-Border Acquisitions and Target Firms' Performance: Evidence from Japanese Firm-Level Data (RePEc:nbr:nberch:6988)
by Kyoji Fukao & Keiko Ito & Hyeog Ug Kwon & Miho Takizawa - Physical and Human Capital Deepening and New Trade Patterns in Japan (RePEc:nbr:nberwo:10209)
by Keiko Ito & Kyoji Fukao - Cross-Border Acquisitions and Target Firms' Performance: Evidence From Japanese Firm-Level Data (RePEc:nbr:nberwo:12422)
by Kyoji Fukao & Keiko Ito & Hyeog Ug Kwon & Miho Takizawa - Outsourcing in East Asia and its impact on the Japanese and Korean Labour Markets (RePEc:oec:traaab:65-en)
by Sanghoon Ahn & Kyoji Fukao & Keiko Ito - Why some firms persistently out-perform others: investigating the interactions between innovation and exporting strategies (RePEc:oup:indcch:v:19:y:2010:i:6:p:1997-2039)
by Keiko Ito & Sébastien Lechevalier - Export Experience, Product Differentiation and Firm Survival in Export Markets (RePEc:spr:jecrev:v:68:y:2017:i:2:d:10.1111_jere.12083)
by Tomohiko Inui & Keiko Ito & Daisuke Miyakawa - The evolution of the productivity dispersion of firms: a reevaluation of its determinants in the case of Japan (RePEc:spr:weltar:v:145:y:2009:i:3:p:405-429)
by Keiko Ito & Sébastien Lechevalier - Modes of international activities and the innovativeness of firms: an empirical analysis based on the Japanese National Innovation Survey for 2009 (RePEc:taf:ecinnt:v:23:y:2014:i:8:p:758-779)
by Shoko Haneda & Keiko Ito - An international comparison of the TFP levels and the productivity convergence of Japanese, Korean, Taiwanese and Chinese listed firms (RePEc:taf:jocebs:v:9:y:2011:i:2:p:127-150)
by Kyoji Fukao & Tomohiko Inui & Keiko Ito & Young Gak Kim & Tangjun Yuan - Diversification in Trade and Foreign Investment and Resilience to the COVID-19 Shock: Firm-level Evidence Using Japanese Customs Data (RePEc:tcr:wpaper:e209)
by Toshiyuki Matsuura & Keiko Ito & Naoto Jinji - Does Material and Service Offshoring Improve Domestic Productivity? Evidence from Japanese Manufacturing Industries (RePEc:wsi:wschap:9789814383486_0002)
by Keiko Ito & Kiyoyasu Tanaka