Zhang, Mingyi MPI for Gravitational Physics, Max Planck Society;
1506.01623.pdf (Preprint), 401KB
Hamma, A., Hung, L.-Y., Marciano, A., & Zhang, M. (2018). Area Law from Loop Quantum Gravity. Physical Review D, 97: 064040. doi:10.1103/PhysRevD.97.064040.