Observational features of the rotating Bardeen black hole surrounded by perfect fluid dark matter Ke-Jian He, Guo-Ping Li, Chen-Yu Yang and Xiao-Xiong Zeng Eur. Phys. J. C, 85 6 (2025) 662 Published online: 16 June 2025 DOI: 10.1140/epjc/s10052-025-14391-8