K. Brechtel, G. Scheffknecht, M. DiBlasi, and H. Thorwarth. Proceedings / Air Quality VII : an international conference on carbon management, mercury, trace substances, SOx, NOx, and particulate matter, Grand Forks, N.D., Energy & Environmental Research Center, (2009)
K. Brechtel, S. Unterberger, and G. Scheffknecht. Papers / Fourth International Conference on Clean Coal Technologies, CCT in conjunction with 3rd International Freiberg Conference on IGCC & XtL Technologies, London, IEA Clean Coal Centre, (2009)