00306nam a2200121Ia 4500082001900000100001900019245004300038260003400081300002000115490003900135500000500174700000500179  a512.7bB142.QF  aBaeza, Ricardo  aQuadratic forms over semilocal ringsb  aBerlinbSpringer-Verlagc1978  avi, 199p. Index  aLecture notes in Mathematicsv 655  a  a