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By Stefan Hougardy, Jens Vygen, Rabe von Randow. Stefan Hougardy is professor of discrete mathematics at the University of Bonn. His research interests include combinatorial optimization and chip design.Jens Vygen is professor of discrete mathematics at the University of Bonn.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.