1. Commission Regulation (EU) 2009/443, OJ L140, 5.6.2009, p. 1-15.
2. Commission Regulation (EU) 2019/631, OJ L111, 25.4.2019, p. 13-53.
3. Isenstadt, A., German, J., Dorobantu, M., Boggs, D., Watson, T., “Downsized, boosted gasoline engines”, International Council On Clean Transportation, Working Paper 2016-2,1October 2016.
4. Differentiated analysis of downsizing concepts;Königstein;MTZ Worldw,2008
5. Cycle-by-Cycle Analysis, Knock Modeling and Spark-Advance Setting of a “Downsized” Spark-Ignition Turbocharged Engine;Bozza;SAE Int. J. Engines,2009