Document Type : Research Paper
Author
.
., .. (2002). . Economics Research, 2(5), 13-34.
., .. ".", Economics Research, 2, 5, 2002, 13-34.
. .. (2002). '.', Economics Research, 2(5), pp. 13-34.
. ., ".," Economics Research, 2 5 (2002): 13-34,
. .. . Economics Research. 2002;2(5):13-34 (In Persian).
