. (2001). . (e123771). Strategy, 9(2), e123771
. "" .e123771 , Strategy, 9, 2, 2001, e123771.
. (2001). '', Strategy, 9(2), e123771.
, "," Strategy, 9 2 (2001): e123771,
. . Strategy. 2001;9(2):e123771 (In Persian).
