Utzmann, A.; Hansteen, T. H.; Schmincke, Hans-Ulrich (2002): Trace element mobility during sub-seafloor alteration of basaltic glass from Ocean Drilling Program Site 953 (off Gran Canaria). Springer International, Berlin, Federal Republic of Germany, In: Schmincke, Hans-Ulrich (editor), Evolution of volcano-magma-hydrosphere systems with emphasis on the Canary Islands, 91 (4), 661-679, georefid:2003-037404