. (2004). . (e123976). Strategy, 11(4), e123976
. "" .e123976 , Strategy, 11, 4, 2004, e123976.
. (2004). '', Strategy, 11(4), e123976.
, "," Strategy, 11 4 (2004): e123976,
. . Strategy. 2004;11(4):e123976 (In Persian).
