. (2003). . (e123969). Strategy, 11(3), e123969
. "" .e123969 , Strategy, 11, 3, 2003, e123969.
. (2003). '', Strategy, 11(3), e123969.
, "," Strategy, 11 3 (2003): e123969,
. . Strategy. 2003;11(3):e123969 (In Persian).
