Theisen, Stefan Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
ZfP-C.pdf (Verlagsversion), 324KB
Theisen, S., Tracas, D., & Zoupanos, G. (1988). Unification of coupling constants without a covering GUT. Zeitschrift für Physik C - Particles and Fields, 37(4), 597-600. doi:10.1007/BF01549719.