Di Matteo, Tiziana High Energy Astrophysics, MPI for Astrophysics, Max Planck Society;
Springel, Volker Cosmology, MPI for Astrophysics, Max Planck Society;
Hopkins, P. F., Hernquist, L., Cox, T. J., Di Matteo, T., Robertson, B., & Springel, V. (2005). Luminosity-dependent quasar lifetimes: a new interpretation of the quasar luminosity function. The Astrophysical Journal, 630(2 Part 1), 716-720. doi:10.1086/432463.