Document Type : Research Paper
Author
.
., .. (2001). . Economics Research, 1(3), 229–240.
., .. ".", Economics Research, 1, 3, 2001, 229–240.
., .. (2001). '.', Economics Research, 1(3), pp. 229–240.
., .., ".." Economics Research, 1 3 (2001): 229–240,
. .. . Economics Research. 2001;1(3):229–240 (In Persian).
