Krumbein, W.E., Brehm, U., Gerdes, G., Gorbushina, A.A., Levit, G. and Palinska, K.A.. «Biofilm, Biodictyon, Biomat Microbialites, Oolites, Stromatolites, Geophysiology, Global Mechanism, Parahistology». A: Krumbein, W.E., Paterson, D.M., and Zavarzin, G.A.. Fossil and Recent Biofilms: A Natural History of Life on Earth (PDF). Kluwer Academic, 2003, p. 1–28. ISBN 1-4020-1597-6 [Consulta: 9 juliol 2008].Arxivat 2007-01-06 a Wayback Machine.
Krumbein, W.E., Brehm, U., Gerdes, G., Gorbushina, A.A., Levit, G. and Palinska, K.A.. «Biofilm, Biodictyon, Biomat Microbialites, Oolites, Stromatolites, Geophysiology, Global Mechanism, Parahistology». A: Krumbein, W.E., Paterson, D.M., and Zavarzin, G.A.. Fossil and Recent Biofilms: A Natural History of Life on Earth (PDF). Kluwer Academic, 2003, p. 1–28. ISBN 1-4020-1597-6 [Consulta: 9 juliol 2008].Arxivat 2007-01-06 a Wayback Machine.