. (2003). . (e123943). Strategy, 11(2), e123943
. "" .e123943 , Strategy, 11, 2, 2003, e123943.
. (2003). '', Strategy, 11(2), e123943.
, "," Strategy, 11 2 (2003): e123943,
. . Strategy. 2003;11(2):e123943 (In Persian).
