Bojowald, Martin Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
0508118.pdf (Preprint), 288KB
Bojowald, M. (2006). Degenerate Configurations, Singularities and the Non-Abelian Nature of Loop Quantum Gravity. Classical and Quantum Gravity, 23, 987-1008.