Sounaka Mishra Venkatesh Raman Saket Saurabh Somnath Sikdar König Deletion Sets and Vertex Covers above the Matching Size. 836-847 2008 ISAAC http://dx.doi.org/10.1007/978-3-540-92182-0_73 conf/isaac/2008 db/conf/isaac/isaac2008.html#MishraRSS08