No-scale SU(5) super-GUTs John Ellis, Jason L. Evans, Natsumi Nagata, Dimitri V. Nanopoulos and Keith A. Olive Eur. Phys. J. C, 77 4 (2017) 232 Published online: 12 April 2017 DOI: 10.1140/epjc/s10052-017-4805-x