C perturbations of FRW models with a cosmological constantZ. Perjés, M. Vasúth, V. Czinner and D. ErikssonA&A, 431 2 (2005) 415-421DOI: https://doi.org/10.1051/0004-6361:20041472
perturbations of FRW models with a cosmological constant perturbations of FRW models with a cosmological constant