. (2003). . (e123932). Strategy, 11(2), e123932
. "" .e123932 , Strategy, 11, 2, 2003, e123932.
. (2003). '', Strategy, 11(2), e123932.
, "," Strategy, 11 2 (2003): e123932,
. . Strategy. 2003;11(2):e123932 (In Persian).
