. (2003). . (e123975). Strategy, 11(3), e123975
. "" .e123975 , Strategy, 11, 3, 2003, e123975.
. (2003). '', Strategy, 11(3), e123975.
, "," Strategy, 11 3 (2003): e123975,
. . Strategy. 2003;11(3):e123975 (In Persian).
