1998

Reader "Modell und Verfahren des Operations Research"
anl. der Emeritierung von Prof. Dr. W. Krabs

2004

International Journal for Discrete Applied Mathematics,
Volume 136, Issue 2-3 anl. 1st Cologne-Twente Workshop 2001 (Cologne) on
Graphs and Combinatorial Optimization
zus. mit Faigle, U., Broersma, H., Hurink, J.

2006

International Journal for Discrete Applied Mathematics,
Volume 154, Issue 9 anl. 2nd Cologne-Twente Workshop 2003 (Twente) on
Graphs and Combinatorial Optimization
zus. mit Faigle, U., Hurink, J.

2006

International Journal for Discrete Optimization
anl. 3rd Cologne-Twente Workshop 2004 (Lago di Como)
on Graphs and Combinatorial Optimization
zus. mit Faigle, U., Liberti, L., Maffioli, F.

2007

International Journal for Discrete Applied Mathematics,
Volume 155, Issue 14 anl. 3rd Cologne-Twente Workshop 2004 (Lago di Como)
on Graphs and Combinatorial Optimization
zus. mit Faigle, U., Liberti, L., Maffioli, F.

2007

Central European Journal of Operations Research,
Volume 15, Issue 3 anl. EURO XXI Conference 2006 (Iceland) “Operations Research for a Better Management of Sustainable Development”
zus. mit Weber, G.-W., Zachariasen, M.