Zhang min, Mingyi AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
1606.02826.pdf (Preprint), 445KB
Han, M., & Zhang min, M. (2016). On Spinfoams Near a Classical Curvature Singularity. Physical Review D, 94: 104075. doi:10.1103/PhysRevD.94.104075.