Document Type : Original Article
. (1999). . Qabasat, 4(13), 171-177.
. "", Qabasat, 4, 13, 1999, 171-177.
. (1999). '', Qabasat, 4(13), pp. 171-177.
, "," Qabasat, 4 13 (1999): 171-177,
. . Qabasat. 1999;4(13):171-177 (In Persian).
