. (2004). . (e123985). Strategy, 11(4), e123985
. "" .e123985 , Strategy, 11, 4, 2004, e123985.
. (2004). '', Strategy, 11(4), e123985.
, "," Strategy, 11 4 (2004): e123985,
. . Strategy. 2004;11(4):e123985 (In Persian).
