Sormani, M. C., Sobacchi, E., Fragkoudi, F., Ridley, M., Treß, R. G., Glover, S. C. O., et al. (2018). A dynamical mechanism for the origin of nuclear rings. Monthly Notices of the Royal Astronomical Society, 481(1), 2-19. doi:10.1093/mnras/sty2246.