@INPROCEEDINGS{brahimi2010b,
  author = {N. Brahimi and N. Absi and S. Dauz\`ere-P\'er\`es and S. Kedad-Sidhoum},
  title = {A two-level lot-sizing problem with bounded inventory},
  booktitle = {International Workshop on Lot Sizing IWLS'10},
  year = {2010},
  pages = {13--14},
  month = {August},
  url = {http://www.emse.fr/~absi/IWLS2010/} 
}