Document Type : Research Paper
Author
.
.,. . (2001). .. Economics Research, 1(1), 57-72.
.,. . ".", Economics Research, 1, 1, 2001, 57-72.
. .. (2001). '.', Economics Research, 1(1), pp. 57-72.
. ., ".," Economics Research, 1 1 (2001): 57-72,
. .. .. Economics Research. 2001;1(1):57-72 (In Persian).
