1. RCG/Hagler Bailly, Inc., Chalmers Industriteknik Energiteknisk Analys and the IEA Heat Pump Centre, 1995. Industrial Heat Pumps: Experiences, Potential and Global Environmental Benefits, ISBN 90 73741 14 9, IEA Heat Pump Centre, Sittard, the Netherlands, April.
2. International overview articles on selected heat pump topics, in The IEA Heat Pump Centre Newsletter (quarterly), Vol. 11, No. 1 to Vol. 13, No. 4;Steadman,1993
3. International Heat Pump Status and Policy Review (3 Volumes);Stuij,1994