. (2004). . (e123995). Strategy, 11(4), e123995
. "" .e123995 , Strategy, 11, 4, 2004, e123995.
. (2004). '', Strategy, 11(4), e123995.
, "," Strategy, 11 4 (2004): e123995,
. . Strategy. 2004;11(4):e123995 (In Persian).
