2. Julian Chela-Flores (1997). Cosmological models and appearance of intelligent life on Earth: The phoenomenon of the eukariotyc cell. En "Reflections on the birth of the Universe: Science, Philosophy and Theology". Padre Eligio, G. Giorello, G. Rigamonti y E. Sindoni (Eds.). Edizioni New Press: Como, pp. 337-373.