2002 - Lie Algebras Graded By the Root Systems Bcr Rgeq 2 (Paperback) ISBN-13: 9780821828113 ISBN-10: 0821828118 ? Extended Affine Lie Algebras and Their Root Systems [Memoirs of the American Mathematical Society] (Paperback) ISBN-13: 9780821805947 ISBN-10: 0821805940 ? |