. (2001). . (e123801). Strategy, 9(3), e123801
. "" .e123801 , Strategy, 9, 3, 2001, e123801.
. (2001). '', Strategy, 9(3), e123801.
, "," Strategy, 9 3 (2001): e123801,
. . Strategy. 2001;9(3):e123801 (In Persian).
