. (2002). . (e123812). Strategy, 9(4), e123812
. "" .e123812 , Strategy, 9, 4, 2002, e123812.
. (2002). '', Strategy, 9(4), e123812.
, "," Strategy, 9 4 (2002): e123812,
. . Strategy. 2002;9(4):e123812 (In Persian).
