1. Thomas Nussbaumer, Michael Oser: Evaluation of Biomass Combustion based Energy Systems by Cumulative Energy Demand and Energy Yield Coefficient, International Energy Agency IEA Bioenergy Task 32 and Swiss Federal Office of Energy, Verenum press, Version 1.0, Zurich, January 2004
2. JOINT RESEARCH CENTRE, Institute for Prospective Technological Studies. Seville, “Integrated Pollution Prevention and Control (IPPC) Reference Document on Best Available Techniques in the Large Volume Organic Chemical Industry” (2002)
3. Heidenreich, S., Nacken, M., Hackel, M., Schaub, G.: Catalytic filter elements for combined particle separation and nitrogen oxides removal from gas streams. Powder Technol. 180(1), 86–90 (2008)
4. Nova, I., Tronconi, E.: Urea-SCR technology for deNOx after treatment of diesel exhausts. Springer, Berlin (2014)
5. Narula, C.K., Daw, C.S., Hoard, J.W., Hammer, T.: Materials issues related to catalysts for treatment of diesel exhaust. Int. J. Appl. Ceram. Technol. 2(6), 452–466 (2005)