Citation: R. Townsend et C. Thirtle, Is livestock research unproductive? Separating health maintenance from improvement research, AGR ECON, 25(2-3), 2001, pp. 177-189
Authors:
Schimmelpfennig, D
Thirtle, C
van Zyl, J
Arnade, C
Khatri, Y
Citation: D. Schimmelpfennig et al., Short and long-run returns to agricultural R&D in South Africa, or will the real rate of return please stand up?, AGR ECON, 23(1), 2000, pp. 1-15
Citation: J. Piesse et C. Thirtle, A stochastic frontier approach to firm level efficiency, technological change, and productivity during the early transition in Hungary, J COMP ECON, 28(3), 2000, pp. 473-501
Citation: D. Schimmelpfennig et C. Thirtle, The internationalization of agricultural technology: Patents, R&D spillovers, and their effects on productivity in the European Union and United States, CONT ECON P, 17(4), 1999, pp. 457-468
Citation: C. Thirtle, Productivity and the returns to levy-funded R&D for sugar production in the eastern counties of England, J AGR ECON, 50(3), 1999, pp. 450-467