A novel conservative grid multi-scroll hyperchaotic system with two-parameter regulation Tingkai Zhao, Yuqi Wei, Xinyan Wang, Xu Sun and Baoxiang Du Eur. Phys. J. Plus, 140 6 (2025) 566 Published online: 21 June 2025 DOI: 10.1140/epjp/s13360-025-06487-7