%% -*-BibTeX-*- @Article{BorndoerferWeismantel2001, author = "Ralf Bornd{\"o}rfer and Robert Weismantel", title = "Discrete Relaxations of Combinatorial Programs", journal = "Discrete Applied Mathematics", volume = "112", number = "1--3", pages = "11--26", year = "2001", note = "ZIB Report 97-54", URL = "http://www.zib.de/PaperWeb/abstracts/SC-97-54", language = "English", }