Document Type : Research Paper
Author
.
.,. . (2002). .. Economics Research, 2(4), 69-98.
.,. . ".", Economics Research, 2, 4, 2002, 69-98.
. .. (2002). '.', Economics Research, 2(4), pp. 69-98.
. ., ".," Economics Research, 2 4 (2002): 69-98,
. .. .. Economics Research. 2002;2(4):69-98 (In Persian).
