. (2002). . (e123815). Strategy, 9(4), e123815
. "" .e123815 , Strategy, 9, 4, 2002, e123815.
. (2002). '', Strategy, 9(4), e123815.
, "," Strategy, 9 4 (2002): e123815,
. . Strategy. 2002;9(4):e123815 (In Persian).
