. (2002). . (e123808). Strategy, 9(4), e123808
. "" .e123808 , Strategy, 9, 4, 2002, e123808.
. (2002). '', Strategy, 9(4), e123808.
, "," Strategy, 9 4 (2002): e123808,
. . Strategy. 2002;9(4):e123808 (In Persian).
