Burak Bilgin Ender Özcan Emin Erkan Korkmaz An Experimental Study on Hyper-heuristics and Exam Timetabling. 394-412 2006 conf/patat/2006 PATAT http://dx.doi.org/10.1007/978-3-540-77345-0_25 db/conf/patat/patat2006.html#BilginOK06