Extremely rich dynamics in a memristor-based chaotic system Hongmin Li, Yanfeng Yang, Wen Li, Shaobo He and Chunlai Li Eur. Phys. J. Plus, 135 7 (2020) 579 Published online: 16 July 2020 DOI: 10.1140/epjp/s13360-020-00569-4