Document Type : Research Paper
Authors
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., .., ., . & ., .. (2004). . Economics Research, 4(14), 167–188.
., .., ., .., & ., .. ".", Economics Research, 4, 14, 2004, 167–188.
., .., ., .., & ., .. (2004). '.', Economics Research, 4(14), pp. 167–188.
., .., ., . & ., .., ".." Economics Research, 4 14 (2004): 167–188,
. .., . .., . .. . Economics Research. 2004;4(14):167–188 (In Persian).
