Document Type : Research Paper
Authors
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.,. and .,. . (2002). .. Economics Research, 2(4), 115-142.
.,. , and .,. . ".", Economics Research, 2, 4, 2002, 115-142.
. ., . .. (2002). '.', Economics Research, 2(4), pp. 115-142.
. . and . ., ".," Economics Research, 2 4 (2002): 115-142,
. ., . .. .. Economics Research. 2002;2(4):115-142 (In Persian).
