. (2003). . (e123954). Strategy, 11(2), e123954
. "" .e123954 , Strategy, 11, 2, 2003, e123954.
. (2003). '', Strategy, 11(2), e123954.
, "," Strategy, 11 2 (2003): e123954,
. . Strategy. 2003;11(2):e123954 (In Persian).
