Quadratic Models for Hub-Location Problems revisited
Proceedings of VEROLOG 2012 - First meeting of the EURO Working Group on Vehicle Routing and Logistics Optimization
pp 22–23 (2012)
(with J. Baudach, C. Buchheim, U. Clausen and F. Meier)
Exact Bipartite Crossing Minimization under Tree Constraints
9th Cologne-Twente Workshop on Graphs and Combinatorial Optimization
Extended Abstracts, pp 17–20 (2010)
(with C. Buchheim and F. Liers)