. (2003). . (e123944). Strategy, 11(2), e123944
. "" .e123944 , Strategy, 11, 2, 2003, e123944.
. (2003). '', Strategy, 11(2), e123944.
, "," Strategy, 11 2 (2003): e123944,
. . Strategy. 2003;11(2):e123944 (In Persian).
