Document Type : Research Paper
Author
.
., .. (2004). . Economics Research, 4(14), 97-130.
., .. ".", Economics Research, 4, 14, 2004, 97-130.
. .. (2004). '.', Economics Research, 4(14), pp. 97-130.
. ., ".," Economics Research, 4 14 (2004): 97-130,
. .. . Economics Research. 2004;4(14):97-130 (In Persian).
