David Applegate Gruia Calinescu David S. Johnson Howard J. Karloff Katrina Ligett Jia Wang Compressing rectilinear pictures and minimizing access control lists. 1066-1075 2007 conf/soda/2007 SODA http://doi.acm.org/10.1145/1283383.1283498 db/conf/soda/soda2007.html#ApplegateCJKLW07