1. Ewing J, Davenport C (2015) Volkswagen to stop sales of diesel cars involved in recall. The New York Times. https://www.nytimes.com/2015/09/21/business/international/volkswagen-chief-apologizes-for-breach-of-trust-after-recall.html. Accessed 4 June 2019
2. Regulation (EC) No 715/2007 of the European Parliament and of the Council of 20 June 2007. Off J Eur Union. https://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1559223983682&uri=CELEX:32007R0715. Accessed 4 June 2019
3. Lefebvre AH, McDonell VG (2017) Atomization and sprays. CRC Press, Boca Raton
4. Baert RS, Frijters PJ, Somers B, Luijten CC, de Boer W (2009) Design and operation of a high pressure, high temperature cell for HD diesel spray diagnostics: guidelines and results (No. 2009-01-0649). SAE technical paper
5. Winklhofer E, Hopfner W (2013) Optical single cylinder engines in engine research and development. Siln Spalinowe 52:71–78