. (2003). . (e123949). Strategy, 11(2), e123949
. "" .e123949 , Strategy, 11, 2, 2003, e123949.
. (2003). '', Strategy, 11(2), e123949.
, "," Strategy, 11 2 (2003): e123949,
. . Strategy. 2003;11(2):e123949 (In Persian).
