Jagged-shape chaotic attractors of a megastable oscillator with spatially square-wave dampingMahdi Karami, Ramesh Ramamoorthy, Ahmed M. Ali Ali and Viet-Thanh PhamEur. Phys. J. Spec. Top., 231 11-12 (2022) 2445-2454DOI: https://doi.org/10.1140/epjs/s11734-021-00373-w