00336nam a2200121Ia 4500082002300000100002600023245005500049260003400104300002200138490004400160500000500204700000500209  a518.50181bH699.GT  aHoffman, Christoph M.  aGroup theoretic algorithms and graph isomorphismb  aBerlinbSpringer-Verlagc1982  aviii, 311p. Index  aLecture notes in Computer Sciencev 136  a  a