Epicyclic frequencies around charged regular black hole: constraints using different quasars dataG. Mustafa, Faisal Javed, Sushant G. Ghosh, S. K. Maurya and Farruh AtamurotovEur. Phys. J. C, 86 1 (2026) 6DOI: https://doi.org/10.1140/epjc/s10052-025-15223-5