Computer Algebra in Scientific Computing 21st International Workshop, CASC 2019, Moscow, Russia, August 26-30, 2019, Proceedings - England, Matthew; England, Matthew; Koepf, Wolfram; Koepf, Wolfram; Sadykov, Timur M.; Sadykov, Timur M.; Seiler, Werner M.; Seiler, Werner M.; Vorozhtsov, Evgenii V.; Vorozhtsov, Evgenii V. (Springer International Publishing : Imprint: Springer, 2019)