Document Type : Research Paper
Author
.
., .. (2001). . Economics Research, 1(3), 217–228.
., .. ".", Economics Research, 1, 3, 2001, 217–228.
., .. (2001). '.', Economics Research, 1(3), pp. 217–228.
., .., ".." Economics Research, 1 3 (2001): 217–228,
. .. . Economics Research. 2001;1(3):217–228 (In Persian).
