Hellmann, Frank Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
1106.6016 (Preprint), 171KB
CQG_29_4_045006.pdf (beliebiger Volltext), 267KB
Barrett, J. W., & Hellmann, F. (2012). Holonomy observables in Ponzano-Regge type state sum models. Classical and quantum gravity, 29(4): 045006. doi:10.1088/0264-9381/29/4/045006.