Citation: D. Schimmelpfennig et C. Thirtle, COINTEGRATION, AND CAUSALITY - EXPLORING THE RELATIONSHIP BETWEEN AGRICULTURAL RESEARCH-AND-DEVELOPMENT AND PRODUCTIVITY, Journal of agricultural economics, 45(2), 1994, pp. 220-231
Citation: D. Schimmelpfennig, AN EMPIRICAL-INVESTIGATION OF THE CAPITAL ENVIRONMENT TRADEOFF, American journal of agricultural economics, 76(5), 1994, pp. 1272-1272