Memristor-based time-delay chaotic system with hidden extreme multi-stability and pseudo-random sequence generatorShuqi Sun, Dengwei Yan, Musha Ji’e, Xinyu Du, Lidan Wang and Shukai DuanEur. Phys. J. Spec. Top., 230 18-20 (2021) 3481-3491DOI: https://doi.org/10.1140/epjs/s11734-021-00248-0