@article{nothegger-12,
 author = {Clemens Nothegger and Alfred Mayer and Andreas Chwatal and Günther R. Raidl},
 journal = {Annals of Operations Research},
 keywords = {evolcomp, scheduling},
 note = {previous technical report version at {https://www.ac.tuwien.ac.at/files/pub/nothegger-12.pdf}},
 number = {1},
 pages = {325--339},
 title = {Solving the Post Enrolment Course Timetabling Problem by Ant Colony Optimization},
 volume = {194},
 year = {2012}
}