Rational quadratic forms / J. W. S. Cassels. Cassels, J. W. S. (John William Scott) Forms, Quadratic. QA243 .C25 512.21 CAR Includes indexes. Bibliography: p. 391-402. London ; New York : Academic Press, 1978. 1978. 1978 Text xvi, 413 p. ; eng L.M.S. monographs ; 13