. (2001). . (e123747). Strategy, 9(1), e123747
. "" .e123747 , Strategy, 9, 1, 2001, e123747.
. (2001). '', Strategy, 9(1), e123747.
, "," Strategy, 9 1 (2001): e123747,
. . Strategy. 2001;9(1):e123747 (In Persian).
