Document Type : Research Paper
Author
.
., .. (2003). . Economics Research, 3(9), 113–129.
., .. ".", Economics Research, 3, 9, 2003, 113–129.
., .. (2003). '.', Economics Research, 3(9), pp. 113–129.
., .., ".." Economics Research, 3 9 (2003): 113–129,
. .. . Economics Research. 2003;3(9):113–129 (In Persian).
