. (2003). . (e123927). Strategy, 11(2), e123927
. "" .e123927 , Strategy, 11, 2, 2003, e123927.
. (2003). '', Strategy, 11(2), e123927.
, "," Strategy, 11 2 (2003): e123927,
. . Strategy. 2003;11(2):e123927 (In Persian).
