Hellmann, Frank Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
1105.1334 (Preprint), 171KB
PRD84_103516.pdf (Any fulltext), 212KB
Hellmann, F. (2011). On the Expansions in Spin Foam Cosmology. Physical Review D, 84: 103516. doi:10.1103/PhysRevD.84.103516.