Document Type : Research Paper
Author
.
., .. (2002). . Economics Research, 2(7), 67-94.
., .. ".", Economics Research, 2, 7, 2002, 67-94.
. .. (2002). '.', Economics Research, 2(7), pp. 67-94.
. ., ".," Economics Research, 2 7 (2002): 67-94,
. .. . Economics Research. 2002;2(7):67-94 (In Persian).
