Frédérique Bassino Julien Clément Gadiel Seroussi Alfredo Viola Optimal Prefix Codes for Some Families of Two-Dimensional Geometric Distributions. 113-122 2006 conf/dcc/2006 DCC http://doi.ieeecomputersociety.org/10.1109/DCC.2006.64 db/conf/dcc/dcc2006.html#BassinoCSV06