Internal and external R&D : a sample selection approach

Claudio A. Piga and Marco Vivarelli

Year of publication:	2004
Authors:	Piga, Claudio A. ; Vivarelli, Marco
Published in:	Oxford bulletin of economics and statistics. - Oxford [u.a.] : Wiley-Blackwell, ISSN 0305-9049, ZDB-ID 215159-5. - Vol. 66.2004, 4, p. 457-482
Subject:	Forschung \| Research \| Industrieforschung \| Industrial research \| Outsourcing \| Forschungskooperation \| Research collaboration \| Theorie \| Theory \| Schätzung \| Estimation \| Italien \| Italy

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