● Schleper C,Puehler G,Holz I,Gambacorta A,Janekovic D,Santarius U,Klenk HP,Zillig W (1995). Picrophilus gen. nov., fam. nov.: a novel aerobic, heterotrophic, thermoacidophilic genus and family comprising archaea capable of growth around pH 0. J. Bacteriol.177, 7050-9.