. (2002). . (e123905). Strategy, 10(2), e123905
. "" .e123905 , Strategy, 10, 2, 2002, e123905.
. (2002). '', Strategy, 10(2), e123905.
, "," Strategy, 10 2 (2002): e123905,
. . Strategy. 2002;10(2):e123905 (In Persian).
