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- [5] AN ANALYSIS OF THE COMPOSITION OF R-AND-D SPENDING [J]. SOUTHERN ECONOMIC JOURNAL, 1982, 49 (02) : 342 - 349
- [7] R-AND-D SPENDING AND PRODUCT PRICING [J]. OPTIMAL CONTROL APPLICATIONS & METHODS, 1990, 11 (03): : 269 - 276
- [9] APPROPRIABILITY, R-AND-D SPENDING, AND TECHNOLOGICAL PERFORMANCE [J]. AMERICAN ECONOMIC REVIEW, 1988, 78 (02): : 424 - 428