. (2003). . (e123938). Strategy, 11(2), e123938
. "" .e123938 , Strategy, 11, 2, 2003, e123938.
. (2003). '', Strategy, 11(2), e123938.
, "," Strategy, 11 2 (2003): e123938,
. . Strategy. 2003;11(2):e123938 (In Persian).
