Allen, Bruce Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;
prd34-3670.pdf (Publisher version), 994KB
Allen, B. (1986). Graviton propagator in de Sitter space. Physical Review D, 34(12), 3670-3675. doi:10.1103/PhysRevD.34.3670.