Operations Research Proceedings 1998 Selected Papers of the International Conference on Operations Research Zurich, August 31 – September 3, 1998 Kall Peter Heftet / 1999 / Tysk
Operations Research Proceedings 2011 Selected Papers of the International Conference on Operations Research (OR 2011), August 30 - September 2, 2011, Zurich, Switzerland Klatte Diethard Heftet / 2012 / Engelsk
