Chaos in fractional system with extreme events Adel Ouannas, Nadjette Debbouche, Viet-Thanh Pham, S Leo Kingston and Tomasz Kapitaniak Eur. Phys. J. Spec. Top., 230 7-8 (2021) 2021-2033 Published online: 08 June 2021 DOI: 10.1140/epjs/s11734-021-00135-8