Dr. Christian Ohlendorf
, Blass A., Ohlendorf C. and Sturm M. (2007). Quantifying human-induced eutrophication in Swiss mountain lakes since AD 1800 using diatoms. The Holocene 17: 1141-1154. http://dx.doi.org/10.1177/095968 [...] _2004-2%289-11%29.pdf Sturm M., Kulbe T. and Ohlendorf C. (2003). Archives in the depth of high mountain lakes. EAWAG News 55e: 15-17. http://www.eawag.ch/publications/eawagnews/www_en55/en55e_screen/