Conradie, Beatrice; Cookson, Graham; Thirtle, Colin G., 1944-
(Blackwell, 2006-06)
A stochastic frontier is fitted to two panels of wine grape farms (34 in Robertson and 36 in Worcester) for 2003 and 2004 and a cross section of 37 table grape farms in De Doorns for 2004 only. The panel of wine grape farms ...