Emeis, K. C. (1990): Pleistocene/upper Pliocene sapropels in the Tyrrhenian Sea. Springer-Verlag, Berlin, Federal Republic of Germany, In: Ittekkot, V. (editor), Kempe, S. (editor), Michaelis, W. (editor), Spitzy, A. (editor), Facets of modern biogeochemistry, 279-295, georefid:1990-069251