. (2001). . (e123768). Strategy, 9(2), e123768
. "" .e123768 , Strategy, 9, 2, 2001, e123768.
. (2001). '', Strategy, 9(2), e123768.
, "," Strategy, 9 2 (2001): e123768,
. . Strategy. 2001;9(2):e123768 (In Persian).
