● Campbell MA,Chain PS,Dang H,El Sheikh AF,Norton JM,Ward NL,Ward BB,Klotz MG (2011). Nitrosococcus watsonii sp. nov., a new species of marine obligate ammonia-oxidizing bacteria that is not omnipresent in the world's oceans: calls to validate the names 'Nitrosococcus halophilus' and 'Nitrosomonas mobilis'. FEMS Microbiol. Ecol.76, 39-48.