Sven Oliver Krumke Madhav V. Marathe Diana Poensgen S. S. Ravi Hans-Christoph Wirth Budgeted Maximum Graph Coverage. 321-332 2002 conf/wg/2002 WG http://link.springer.de/link/service/series/0558/bibs/2573/25730321.htm db/conf/wg/wg2002.html#KrumkeMPRW02