Octet baryon magnetic moments at next-to-next-to-leading order in covariant chiral perturbation theory Yang Xiao, Xiu-Lei Ren, Jun-Xu Lu, Li-Sheng Geng and Ulf-G. Meißner Eur. Phys. J. C, 78 6 (2018) 489 Published online: 12 June 2018 DOI: 10.1140/epjc/s10052-018-5960-4