Document Type : Research Paper
Author
.
., .. (2001). . Economics Research, 1(3), 241–245.
., .. ".", Economics Research, 1, 3, 2001, 241–245.
., .. (2001). '.', Economics Research, 1(3), pp. 241–245.
., .., ".." Economics Research, 1 3 (2001): 241–245,
. .. . Economics Research. 2001;1(3):241–245 (In Persian).
