. (2003). . (e123936). Strategy, 11(2), e123936
. "" .e123936 , Strategy, 11, 2, 2003, e123936.
. (2003). '', Strategy, 11(2), e123936.
, "," Strategy, 11 2 (2003): e123936,
. . Strategy. 2003;11(2):e123936 (In Persian).
