. (2003). . (e123844). Strategy, 10(4), e123844
. "" .e123844 , Strategy, 10, 4, 2003, e123844.
. (2003). '', Strategy, 10(4), e123844.
, "," Strategy, 10 4 (2003): e123844,
. . Strategy. 2003;10(4):e123844 (In Persian).
