Vortex rings in internal combustion engines : modelling versus experimentSazhin, Sergei; Kaplanski, Felix; Begg, Steven; Heikal, MorganProceedings of the 19th International Simposium on Transport Phenomena (ISTP-19) : Reykjavik, Iceland, August 17-20, 20082008 / p. 133-140 https://www.researchgate.net/profile/Felix-Kaplanski/publication/278242750_Vortex_rings_in_internal_combustion_engines_modelling_versus_experiment/links/557ed2e208aec87640ddea88/Vortex-rings-in-internal-combustion-engines-modelling-versus-experiment.pdf