Document Type : Research Paper
Author
.
.,. . (2001). .. Economics Research, 1(2), 121-134.
.,. . ".", Economics Research, 1, 2, 2001, 121-134.
. .. (2001). '.', Economics Research, 1(2), pp. 121-134.
. ., ".," Economics Research, 1 2 (2001): 121-134,
. .. .. Economics Research. 2001;1(2):121-134 (In Persian).
