Document Type : Research Paper
Authors
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., .., ., . & ., .. (2004). . Economics Research, 4(12), 137–167.
., .., ., .., & ., .. ".", Economics Research, 4, 12, 2004, 137–167.
., .., ., .., & ., .. (2004). '.', Economics Research, 4(12), pp. 137–167.
., .., ., . & ., .., ".." Economics Research, 4 12 (2004): 137–167,
. .., . .., . .. . Economics Research. 2004;4(12):137–167 (In Persian).
