Document Type : Research Paper
Authors
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., . & ., .. (2004). . Economics Research, 4(15), 169–198.
., .., & ., .. ".", Economics Research, 4, 15, 2004, 169–198.
., .., & ., .. (2004). '.', Economics Research, 4(15), pp. 169–198.
., . & ., .., ".." Economics Research, 4 15 (2004): 169–198,
. .., . .. . Economics Research. 2004;4(15):169–198 (In Persian).