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- [2] MARKET-STRUCTURE AND INNOVATION - KAMIEN,MI, SCHWARTZ,NL ECONOMIC JOURNAL, 1982, 92 (368): : 985 - 987
- [6] MARKET-STRUCTURE AND INNOVATION - CAMBRIDGE SURVEYS OF ECONOMIC LITERATURE - KAMIEN,MI, SCHWARTZ,NL CANADIAN JOURNAL OF ECONOMICS-REVUE CANADIENNE D ECONOMIQUE, 1983, 16 (04): : 729 - 733