1. Phosphoric acid fuel cells;Appleby;Energy,1986
2. Fuel cell technology: Status and future prospects;Appleby;Energy,1996
3. Fuel Cell Handbook;Appleby,1989
4. Fuel Cell Systems,1993
5. EG&G Technical Services, under Contract to the US Department of Energy, Office of Fossil Energy, National Energy Technology Laboratory, Morgantown, WV (2004) Fuel Cell Handbook, 7th edn. Springfield, MD: National Technical Information Service.