. (2001). . (e123790). Strategy, 9(3), e123790
. "" .e123790 , Strategy, 9, 3, 2001, e123790.
. (2001). '', Strategy, 9(3), e123790.
, "," Strategy, 9 3 (2001): e123790,
. . Strategy. 2001;9(3):e123790 (In Persian).
