1. Gasification technologies: the path to clean, affordable energy in the 21st century;Stiegel;Fuel Processing Technology,2001
2. IGCC Buggenum Commercial operation, EU Seminar: Status of Development and Market Penetration of Clean Coal Technologies (CCT) for Power Generation, Dusseldorf, Germany, November 5 and 6, 1998, Proceedings;de Winter,1998