Author
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., .. (2006). . Economics Research, 6(21), 151–166.
., .. ".", Economics Research, 6, 21, 2006, 151–166.
., .. (2006). '.', Economics Research, 6(21), pp. 151–166.
., .., ".." Economics Research, 6 21 (2006): 151–166,
. .. . Economics Research. 2006;6(21):151–166 (In Persian).
