Genome analysis using clusters of orthologous groups (COGs).

Eugene V. Koonin Roman L. Tatusov Michael Y. Galperin Michael N. Rosanov Genome analysis using clusters of orthologous groups (COGs). 135-139 1998 RECOMB http://doi.acm.org/10.1145/279069.279106 db/conf/recomb/recomb1998.html#KooninTGR98