WEI-SHU HOU2021-07-282021-07-282019https://www.scopus.com/inward/record.url?eid=2-s2.0-85062909493&partnerID=40&md5=ea2d8b52ddf3c6bc503e76a9a048b686https://scholars.lib.ntu.edu.tw/handle/123456789/574923Lepton number violation and μ, τ systemsbook part10.1007/978-3-662-58629-7_92-s2.0-85062909493