@article{LachLuebbecke2019a,
	author = {G. Lach and M. L\"{u}bbecke},
	title = {Curriculum based course timetabling: new solutions to Udine benchmark instances},
	journal = {Annals of Operations Research},
	year = {2012},
	number = {1},
	pages = {255--272},
	volume = {194},
	month = {Mar},
	doi = {10.1007/s10479-010-0700-7}
}