. (2002). . (e123816). Strategy, 9(4), e123816
. "" .e123816 , Strategy, 9, 4, 2002, e123816.
. (2002). '', Strategy, 9(4), e123816.
, "," Strategy, 9 4 (2002): e123816,
. . Strategy. 2002;9(4):e123816 (In Persian).
