1. Introduction: an overview of the thermophies;Brock,1986
2. Hyperthermophilic microorganisms;Stetter;FEMS Microbiol. Rev.,1990
3. Towards a natural system of organisms: proposal for the domains Archaea, Bacteria and Eucarya;Woese,1990
4. Phylogenetic structure of the prokaryotic domain: the primary kingdoms;Woese,1977
5. Hyperthermophiles: isolation, classification, and properties;Stetter,1998