5Farrell,Michael J. The measurement of productivity efficiency[J].{H}Journal of the Royal Statistical Society,1957,(120):253-290.
6MALMQUIST S. Index numbers and indifference surfaces[J].Trabajos de Estadistica y de Investigacion Operativa,1953,(04):209-242.
7Coe D T, Helpman E. International R&D Spillovers [J]. European Economic Review, 1995, 39(5): 859-887.
8Malmquist S. Index Numbers and Indifference Curves [J]. Trabajos de Estatistica, 1953, 4(1):209-242.
9Caves D W, Christensen L R, Diewert W E. Multilateral Comparisons of Output, Input and Productivity Using Superlative Index Numbers [J]. Economic Journal, 1982 (92):73 -86.