. (2003). . (e123942). Strategy, 11(2), e123942
. "" .e123942 , Strategy, 11, 2, 2003, e123942.
. (2003). '', Strategy, 11(2), e123942.
, "," Strategy, 11 2 (2003): e123942,
. . Strategy. 2003;11(2):e123942 (In Persian).
