@techreport{BertholdGleixner2009, author = {Timo Berthold and Ambros Gleixner}, title = {Undercover - a primal heuristic for MINLP based on sub-MIPs generated by set covering}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {09-40}, language = {eng}, year = {2009} }