. (2001). . (e123749). Strategy, 9(1), e123749
. "" .e123749 , Strategy, 9, 1, 2001, e123749.
. (2001). '', Strategy, 9(1), e123749.
, "," Strategy, 9 1 (2001): e123749,
. . Strategy. 2001;9(1):e123749 (In Persian).
