. (2004). . (e123978). Strategy, 11(4), e123978
. "" .e123978 , Strategy, 11, 4, 2004, e123978.
. (2004). '', Strategy, 11(4), e123978.
, "," Strategy, 11 4 (2004): e123978,
. . Strategy. 2004;11(4):e123978 (In Persian).
