A. Bidwe, A. Charitos, H. Dieter, A. Wei, M. Zieba, and G. Scheffknecht. Proceedings of the Tenth International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-10, page 641-648. New York, NY, Engineering Conferences International, (2011)
R. Spörl, R. Youssefi, J. Maier, and G. Scheffknecht. Coal - energy, environment and sustainable development : 33rd Annual International Pittsburgh Coal Conference (IPCC 2016), 1, page 444-458. Red Hook, NY, Curran, (2016)
M. Bari, G. Baumbach, G. Scheffknecht, and B. Kuch. Proceedings of the 2nd International conference on Environmental management, engineering, planning and economics (CEMEPE 2009) and SECOTOX Conference, Thessaloniki, CEMEPE, (2009)