. (2002). . (e123818). Strategy, 9(4), e123818
. "" .e123818 , Strategy, 9, 4, 2002, e123818.
. (2002). '', Strategy, 9(4), e123818.
, "," Strategy, 9 4 (2002): e123818,
. . Strategy. 2002;9(4):e123818 (In Persian).
