@ARTICLE{Absi2008a,
author={Absi, Nabil and Kedad-Sidhoum, Safia},
title = {The multi-item capacitated lot-sizing problem with setup times and
shortage costs},
journal = {European Journal of Operational Research},
year = {2008},
volume = {185},
pages = {1351--1374},
number = {3},
url = {ABSI-EJOR2008.pdf},
doi = {http://dx.doi.org/10.1016/j.ejor.2006.01.053}
}