. (2003). . (e123973). Strategy, 11(3), e123973
. "" .e123973 , Strategy, 11, 3, 2003, e123973.
. (2003). '', Strategy, 11(3), e123973.
, "," Strategy, 11 3 (2003): e123973,
. . Strategy. 2003;11(3):e123973 (In Persian).
