Document Type : Research Paper
Author
.
., .. (2002). . Economics Research, 2(5), 115-134.
., .. ".", Economics Research, 2, 5, 2002, 115-134.
. .. (2002). '.', Economics Research, 2(5), pp. 115-134.
. ., ".," Economics Research, 2 5 (2002): 115-134,
. .. . Economics Research. 2002;2(5):115-134 (In Persian).
