Document Type : Research Paper
Authors
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.,. and .,. . (2001). .. Economics Research, 1(1), 91-108.
.,. , and .,. . ".", Economics Research, 1, 1, 2001, 91-108.
. ., . .. (2001). '.', Economics Research, 1(1), pp. 91-108.
. . and . ., ".," Economics Research, 1 1 (2001): 91-108,
. ., . .. .. Economics Research. 2001;1(1):91-108 (In Persian).
