1. Merker GP, Schwartz Ch, Teichmann R. Combustion engines development. Berlin: Springer; 2009.
2. Kuhlbach K, Mehring J, Bormann D, Friedfeld R. Zylinderkopf mit integriertem Abgaskrummer fur Downsizing-Konzept. Mag MTZ. 2009;69:286–93.
3. Smith A. Stroke of genius for gasoline downsizing. Ricardo Q Rev 2008;Q3.
4. Heywood JB. Internal combustion engine fundamentals. Singapore: McGraw-Hill; 1989.
5. Hiereth H, Prenninger P. Charging the internal combustion engine. New York: Springer; 2007.