. (2001). . (e123784). Strategy, 9(3), e123784
. "" .e123784 , Strategy, 9, 3, 2001, e123784.
. (2001). '', Strategy, 9(3), e123784.
, "," Strategy, 9 3 (2001): e123784,
. . Strategy. 2001;9(3):e123784 (In Persian).
