TY - JOUR A1 - Olli, G. T1 - Determination of the historical variation of the trophic state in lakes using sediment stratigraphies JO - Hydrol. Earth Syst. Sci. J1 - HESS VL - 11 IS - 6 SP - 1747 EP - 1756 Y1 - 2007/11/06 PB - Copernicus Publications SN - 1607-7938 UR - https://hess.copernicus.org/articles/11/1747/2007/ L1 - https://hess.copernicus.org/articles/11/1747/2007/hess-11-1747-2007.pdf DO - 10.5194/hess-11-1747-2007 ER -