F?re R, E GrifellTatje, S Grosskopf and CAK Lovell (1997). “Biased Technical Change and the Malmquist Productivity Index.” Scandinavian J Economics 99(1): 119-127.
F?re R, E GrifellTatje, S Grosskopf and CAK Lovell (1997). “Biased Technical Change and the Malmquist Productivity Index.” Scandinavian J Economics 99(1): 119-127.