Document Type : Research Paper
Author
.
., .. (2002). . Economics Research, 2(5), 195-227.
., .. ".", Economics Research, 2, 5, 2002, 195-227.
. .. (2002). '.', Economics Research, 2(5), pp. 195-227.
. ., ".," Economics Research, 2 5 (2002): 195-227,
. .. . Economics Research. 2002;2(5):195-227 (In Persian).
