Document Type : Research Paper
Author
.
., .. (2005). . Economics Research, 5(17), 39-64.
., .. ".", Economics Research, 5, 17, 2005, 39-64.
. .. (2005). '.', Economics Research, 5(17), pp. 39-64.
. ., ".," Economics Research, 5 17 (2005): 39-64,
. .. . Economics Research. 2005;5(17):39-64 (In Persian).
