Energy spectra of muonic atoms in quantum electrodynamics A. E. Dorokhov, A. A. Krutov, A. P. Martynenko, F. A. Martynenko and O. S. Sukhorukova EPJ Web Conf., 204 (2019) 05007 Published online: 03 April 2019 DOI: 10.1051/epjconf/201920405007