Ulrich Derigs

Operations Research Proceedings, 1994  Ulrich Derigs Achim Bachem Andreas Drexl Hardcover. Springer-Verlag, 1995-01-24 ISBN 9780387587936     Operations Research Proceedings 1993: Dgor/Nsor : Papers of the 22nd Annual Meeting of Dgor in Cooperation With Nsor : Vortrage Der 22, Jahrestagung Der Dgor Zusammen Mit Nsor  Von Herausgegeben H. Dyckhoff Ulrich Derigs M. Salomon H. C. Tijms Paperback. Springer-Verlag, 1994-07-23 ISBN 9780387578620     Programming in Networks and Graphs: On the Combinatorial Background and Near-Equivalence of Network Flow and Matching Algorithms (Lecture Notes in E)  Ulrich Derigs Paperback. Springer-Verlag, 1988-05-18 ISBN 9780387189697