. (2003). . (e123971). Strategy, 11(3), e123971
. "" .e123971 , Strategy, 11, 3, 2003, e123971.
. (2003). '', Strategy, 11(3), e123971.
, "," Strategy, 11 3 (2003): e123971,
. . Strategy. 2003;11(3):e123971 (In Persian).
