Muon conversion to electron in nuclei within the BLMSSM Tao Guo, Shu-Min Zhao, Xing-Xing Dong, Chun-Gui Duan and Tai-Fu Feng Eur. Phys. J. C, 78 11 (2018) 925 Published online: 13 November 2018 DOI: 10.1140/epjc/s10052-018-6413-9