Document Type : Research Paper
Author
.
.,. . (2001). .. Economics Research, 1(1), 109-128.
.,. . ".", Economics Research, 1, 1, 2001, 109-128.
. .. (2001). '.', Economics Research, 1(1), pp. 109-128.
. ., ".," Economics Research, 1 1 (2001): 109-128,
. .. .. Economics Research. 2001;1(1):109-128 (In Persian).
