@INPROCEEDINGS{brahimi2010,
author = {N. Brahimi and N. Absi and S. Dauz\`ere-P\'er\`es and S. Kedad-Sidhoum},
title = {Mathematical models and lagrangian heuristics for a two-level lot-sizing problem with bounded inventory},
booktitle = {8th ENIM IFAC International Conference of Modeling and Simulation MOSIM'10},
year = {2010},
pages = {1--10},
month = {May},
url = {http://www.enim.fr/mosim2010/english/articles/156.pdf}
}