Andersson, Lars Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
cosmological-1.pdf (Verlagsversion), 138KB
Andersson, L., Galloway, G. J., & Howard, R. (1998). The cosmological time function. Classical and Quantum Gravity, 15(2), 309-322.