The integrated microbial genomes (IMG) system.
Victor M. MarkowitzFrank KorzeniewskiKrishna PalaniappanErnest SzetoGreg WernerAnu PadkiXueling ZhaoInna DubchakPhilip HugenholtzIain AndersonAthanasios LykidisKonstantinos MavrommatisNatalia IvanovaNikos KyrpidesPublished in: Nucleic Acids Res. (2006)