● Sprenger WW,van Belzen MC,Rosenberg J,Hackstein JH,Keltjens JT (2000). Methanomicrococcus blatticola gen. nov., sp. nov., a methanol- and methylamine-reducing methanogen from the hindgut of the cockroach Periplaneta americana. Int. J. Syst. Evol. Microbiol.50, 1989-99.