%% -*-BibTeX-*- @InProceedings{Koch2006b, author = "Thorsten Koch", editor = "Hans-Dietrich Haasis and Herbert Kopfer and J{\"o}rn Sch{\"o}nberger", booktitle = "Operations Research Proceedings 2005", title = "Rapid Mathematical Programming or How to Solve Sudoku Puzzles in a few Seconds", pages = "21--26", year = "2006", ISBN = "3-540-32537-9", note = "ZIB-Report 05-51", URL = "http://opus.kobv.de/zib/volltexte/2005/884/", language = "English", }