By Lanjouw J.O.   Cockburn I.M.   in World Development

ISSN:0305-750X|29|2|265-289

Elsevier‎(2001)‎

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By Chwelos P. D.   Berndt E. R.   Cockburn I. M.   in Applied Economics

ISSN:1466-4283|40|22|2839-2856

Routledge Ltd‎(2008)‎

Access to resources Favorite 2.2794163