Alberto Apostolico Matteo Comin Laxmi Parida Motifs in Ziv-Lempel-Welch Clef. 72-81 2004 conf/dcc/2004 Data Compression Conference http://csdl.computer.org/comp/proceedings/dcc/2004/2082/00/20820072abs.htm db/conf/dcc/dcc2004.html#ApostolicoCP04