VICTOR G. GANZHA is Visiting Professor of Mathematics with theFaculty of Mathematics and Informatics at the University of Kassel, Germany, where he presents lecture courses on advanced computeralgebra systems and their applications to higher mathematics andnumerical analysis. He is coauthor of Differentialgleichungen mitMathematica.
E. V. VOROZHTSOV is a research scientist at the Russian Academy ofSciences in Novosibirsk, Russia, and Professor of Mathematics withthe Faculty of Flying Vehicles at the Novosibirsk State TechnicalUniversity. He is coauthor of Methods for the Localization ofSingularities in Numerical Solutions of Gas Dynamics Problems.