共 9 条
[1]
ALAM MS, 1981, ECON LETT, V8, P177
[2]
FALVEY RE, 1978, Q J EC, P175
[3]
JOSHI V, 1972, B OXFORD U I ECON ST, V34, P3
[5]
LITTLE IMD, 1969, MANUAL IND PROJECT A, V2
[7]
Meade J. E., 1955, THEORY CUSTOMS UNION
[8]
RAY A, 1974, J EC THEORY