Symposia Gaussiana, Conference A: Mathematics and Theoretical Physics : Proceedings of the 2nd Gauss Symposium, August 2-7, 1993, Munich

Published 2011

Cellular structures in topology

by Fritsch, Rudolf, Piccinini, Renzo A.
Published 1990

The Four-Color Theorem : History, Topological Foundations, and Idea of Proof

by Fritsch, Rudolf, Fritsch, Gerda
Published 1998