. (2001). . (e123778). Strategy, 9(2), e123778
. "" .e123778 , Strategy, 9, 2, 2001, e123778.
. (2001). '', Strategy, 9(2), e123778.
, "," Strategy, 9 2 (2001): e123778,
. . Strategy. 2001;9(2):e123778 (In Persian).
