1. Delphi Technologies, Worldwide emissions standards – passenger cars and light duty vehicles, 2020/21
2. Eastwood, P., Particulate Emissions from Vehicles, Ford Motor Company, John Wiley & Sons Ltd, 2008
3. Cudeiro, Torruella M., Partikelemissionsuntersuchungen an einem Ottomotor mit Benzindirekteinspritzung und aufgeladenem Magerbetrieb, Stuttgart: Springer Vieweg, 2016
4. WHO, „Health effects of particulate matter. Policy implications for countries in eastern Europe, Caucasus and central Asia“, World Health Organization, Regional Office for Europe, 2013
5. CARB, LEV III PM Technical Support Document: Appendinx P, California Air Resoureces Board, 2011