%% -*-BibTeX-*- @TechReport{AchterbergGroetschelKoch2006, author = "Tobias Achterberg and Martin Gr{\"o}tschel and Thorsten Koch", title = "Software for Teaching Modeling of Integer Programming Problems", type = "ZIB-Report", number = "06-23", institution = "Zuse Institute Berlin", address = "Takustr. 7, Berlin", year = "2006", URL = "http://opus.kobv.de/zib/volltexte/2006/917/", language = "English", }