共 57 条
[2]
[Anonymous], PAPELES EC ESPANOLA
[3]
[Anonymous], 1993, MEASUREMENT PRODUCTI
[6]
BRADFORD DF, 1969, NATL TAX J, V22, P185
[7]
Non-convex technologies and cost functions: Definitions, duality and nonparametric tests of convexity
[J].
JOURNAL OF ECONOMICS-ZEITSCHRIFT FUR NATIONALOKONOMIE,
2004, 81 (02)
:155-192