Chaotic flows with special equilibria Zhen Wang, Zhouchao Wei, Kehui Sun, Shaobo He, Huihai Wang, Quan Xu and Mo Chen Eur. Phys. J. Special Topics, 229 6-7 (2020) 905-919 Published online: 26 March 2020 DOI: 10.1140/epjst/e2020-900239-2