Erwin Marsi Emiel Krahmer Iris Hendrickx Walter Daelemans On the Limits of Sentence Compression by Deletion. 45-66 2010 Empirical Methods in Natural Language Generation http://dx.doi.org/10.1007/978-3-642-15573-4_3 conf/eacl/2010enlg db/conf/eacl/enlg2010.html#MarsiKHD10