@inproceedings{King:2024Sj, author = "King, Stephen F.", title = "{Neutrino Mixing Sum Rules and Littlest Seesaw Models}", doi = "10.22323/1.463.0119", booktitle = "Proceedings of Corfu Summer Institute 2023 "School and Workshops on Elementary Particle Physics and Gravity" {\textemdash} PoS(CORFU2023)", year = 2024, volume = "463", pages = "119" }