@ARTICLE{Różycki_R._Discrete-continuous_2016,
 author={Różycki, R. and Waligóra, G. and Węglarz, J.},
 volume={64},
 number={No 2},
 journal={Bulletin of the Polish Academy of Sciences Technical Sciences},
 pages={383-393},
 howpublished={online},
 year={2016},
 title={Discrete-continuous project scheduling with preemptable activities},
 URL={http://journals.pan.pl/Content/84516/PDF/10.1515bpasts-2016-0043.pdf},
 doi={10.1515/bpasts-2016-0043},
}