. (2003). . (e123906). Strategy, 11(1), e123906
. "" .e123906 , Strategy, 11, 1, 2003, e123906.
. (2003). '', Strategy, 11(1), e123906.
, "," Strategy, 11 1 (2003): e123906,
. . Strategy. 2003;11(1):e123906 (In Persian).
