. (2001). . (e123770). Strategy, 9(2), e123770
. "" .e123770 , Strategy, 9, 2, 2001, e123770.
. (2001). '', Strategy, 9(2), e123770.
, "," Strategy, 9 2 (2001): e123770,
. . Strategy. 2001;9(2):e123770 (In Persian).
