@TechReport{haus-koeppe-weismantel-2000:ibm-soda-preprint,
  author = 	 {Haus, Utz-Uwe and K{\"o}ppe, Matthias and Weismantel, Robert},
  title = 	 {The Integral Basis Method for Integer Programming},
  year = 	 2001,
  journal = {Mathematical Methods of Operations Research},
  volume = 53,
  number = 3,
  pages = {353--361}
}