The sensual (quadratic) form
John H. Conway ; assisted by Francis Y.C. Fung.
[Washington, D.C.] : Mathematical Association of America, ©1997.
xiii, 152 págs. : ilustraciones ; 22 cm.
Serie: The Carus mathematical monographs ; no. 26
ISBN: 0883850303
Includes bibliographical references (p. 143-146) and index.
Reseña: MathSciNet, 98k:11035