Creating Habitable Zones, at all Scales, from Planets to Mud Micro-Habitats, on Earth and on Mars. - Nisbet, Euan; Zahnle, Kevin; Gerasimov, M. V.; Helbert, Jörn; Jaumann, Ralf; Hofmann, Beda A.; Benzerara, Karim; Westall, Frances (Space Science Reviews, 2007)