Philip Bille Rolf Fagerberg Inge Li Gørtz Improved Approximate String Matching and Regular Expression Matching on Ziv-Lempel Compressed Texts. 52-62 2007 conf/cpm/2007 CPM http://dx.doi.org/10.1007/978-3-540-73437-6_8 db/conf/cpm/cpm2007.html#BilleFG07