• Vortex ring-like structures in gasoline fuel sprays under cold-start conditionsBegg, Steven; Kaplanski, Felix; Sazhin, Sergei; Hindle, M.; Heikal, MorganInternational journal of engine research2009 / 4, p. 195-214 https://www.researchgate.net/publication/239580543_Vortex_ring-like_structures_in_gasoline_fuel_sprays_under_cold-start_conditions