@article{Santos2016,
title={Integer programming techniques for the nurse rostering problem},
author={Santos, Haroldo G. and Toffolo, Túlio A.M. and Gomes, Rafael A.M. and Ribas, Sabir},
year={2016},
volume="239",
pages="225--251",
issn={0254-5330},
journal={Annals of Operations Research},
doi={10.1007/s10479-014-1594-6},
publisher={Springer US},
pages={ 225--251}
}