TY - CHAP U1 - Konferenzveröffentlichung A1 - Kaul, P. A1 - Schmitz, U. A1 - Oetzel, M. A1 - Brach-Annies, C. A1 - Kerschberger, A. T1 - Energy Efficiency and Solar Energy Use in Commercial Buildings, University of Applied Sciences Bonn-Rhein-Sieg T2 - Sayigh (Eds.): Renewables: world's best energy option extended abstracts. World Renewable Energy Congress VII, 29 June - 5 July 2002, Cologne, Germany Y1 - 2002 SN - 0-08-044079-7 SB - 0-08-044079-7 ER -