%% -*-BibTeX-*- @InCollection{BorndoerferGroetschelLoebel1998a, author = "Ralf Bornd{\"o}rfer and Martin Gr{\"o}tschel and Andreas L{\"o}bel", editor = "P. L. Butzer and Hubertus Th. Jongen and Walter Oberschelp", booktitle = "Charlemagne and his Heritage. 1200 Years of Civilization and Science in Europe. Karl der Grosse und sein Nachwirken . 1200 Jahre Kultur und Wissenschaft in Europa", title = "Alcuin's Transportation Problems and Integer Programming", volume = "2", publisher = "Brepols Publisher", address = "Turnhout", pages = "379--409", year = "1998", series = "Mathematical Arts", classmath = "*90-01 90C10 90B06 01A35 90-03", language = "English", }