>A few people here like a lot >"Group theory and its applications in physics" by Teturo Inui Thank you very much! Nicolas Chamel. Institut d'Astronomie et d'Astrophysique Universite Libre de Bruxelles CP 226 Boulevard du Triomphe B-1050 Brussels BELGIUM tel. +32 2 650 35 72 fax. +32 2 650 28 64