@incollection{BorndoerferGroetschelLoebel1998, author = {Ralf Bornd{\"o}rfer and Martin Gr{\"o}tschel and Andreas L{\"o}bel}, title = {Alcuin's Transportation Problems and Integer Programming}, 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}, editor = {Paul Leo Butzer and Hubertus Jongen and Walter Oberschelp}, volume = {2}, pages = {379 -- 409}, year = {1998}, }