R x1 r x1 r p x1 p p r P x1 r r x1 x1 r P P x1 P P r x1 p P x1 x1 P p x1 x1 r R x1 x1 R r x1 x1 R 1 r 1 p 1 P 1 FULL ./SRS/Zantema/z071.srs