Document Type : Research Paper
Author
.
.,. . (2002). .. Economics Research, 2(4), 99-114.
.,. . ".", Economics Research, 2, 4, 2002, 99-114.
. .. (2002). '.', Economics Research, 2(4), pp. 99-114.
. ., ".," Economics Research, 2 4 (2002): 99-114,
. .. .. Economics Research. 2002;2(4):99-114 (In Persian).
