1. J. Mathiak, et al. Problemstellung, Chancen und Risiken von Brennstoffzellen APU's – Fachforum Brennstoffzelle – Entwickler und Anwender berichten, Berlin, 7–8 October 2003.
2. Power supply for sailing yachts—fuel cell technology with LPG as a user friendly application;Beckhaus,2004
3. Coupling of a 2.5kW Steam Reformer with a 1kWel PEM Fuel Cell—Eighth Grove Fuel Cell Symposium;Brandt,2003