. (2002). . (e123903). Strategy, 10(2), e123903
. "" .e123903 , Strategy, 10, 2, 2002, e123903.
. (2002). '', Strategy, 10(2), e123903.
, "," Strategy, 10 2 (2002): e123903,
. . Strategy. 2002;10(2):e123903 (In Persian).
