Memristor-based Systems: Nonlinearity, Dynamics and Applications Viet-Thanh Pham, Christos Volos and Luigi Fortuna Eur. Phys. J. Special Topics, 228 10 (2019) 1903-1906 Published online: 14 October 2019 DOI: 10.1140/epjst/e2019-900152-7