. (2001). . (e123772). Strategy, 9(2), e123772
. "" .e123772 , Strategy, 9, 2, 2001, e123772.
. (2001). '', Strategy, 9(2), e123772.
, "," Strategy, 9 2 (2001): e123772,
. . Strategy. 2001;9(2):e123772 (In Persian).
