Hongbo Li, Peter J. Olver, Gerald Sommer (Eds.): Computer Algebra and Geometric Algebra with Applications, 6th International Workshop, IWMM 2004, Shanghai, China, May 19-21, 2004, and International Workshop, GIAE 2004, Xian, China, May 24-28, 2004, Revised Selected Papers. Springer 2005 Lecture Notes in Computer Science 3519 ISBN 3-540-26296-2 [ contents ]