. (2002). . (e123806). Strategy, 9(4), e123806
. "" .e123806 , Strategy, 9, 4, 2002, e123806.
. (2002). '', Strategy, 9(4), e123806.
, "," Strategy, 9 4 (2002): e123806,
. . Strategy. 2002;9(4):e123806 (In Persian).
