Vladimir F. Kovalev. Computer Algebra Tools in Construction of Renormgroup Symmetries. In Victor G. Ganzha, Ernst W. Mayr, Evgenii V. Vorozhtsov, editors, Proceedings of the Second Workshop on Computer Algebra in Scientific Computing, CASC 1999, Munich, Germany, May 31 - June 4, 1999. pages 251-267, Springer, 1999. [doi]