Yin Xiong Xiong, Y., & Roberts, W. L. (2003). Observations on the interaction between a premixed flame kernel and a vortex of different equivalence ratio. Proceedings of the Combustion Institute, 29(2003), 1687–1693. https://doi.org/10.1016/S1540-7489(02)80207-3 Xiong, Y., Roberts, W. L., Drake, M. C., & Fansler, T. D. (2001). Investigation of pre-mixed flame-kernel/vortex interactions via high-speed imaging. Combustion and Flame, 126(4), 1827–1844. https://doi.org/10.1016/S0010-2180(01)00293-0