Document Type : Research Paper
Authors
.
., . & ., .. (2003). . Economics Research, 3(8), 199–215.
., .., & ., .. ".", Economics Research, 3, 8, 2003, 199–215.
., .., & ., .. (2003). '.', Economics Research, 3(8), pp. 199–215.
., . & ., .., ".." Economics Research, 3 8 (2003): 199–215,
. .., . .. . Economics Research. 2003;3(8):199–215 (In Persian).
