. (2003). . (e123920). Strategy, 11(1), e123920
. "" .e123920 , Strategy, 11, 1, 2003, e123920.
. (2003). '', Strategy, 11(1), e123920.
, "," Strategy, 11 1 (2003): e123920,
. . Strategy. 2003;11(1):e123920 (In Persian).
