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2. El lago de Sanabria. Estudio Limnológico;Aldaroso,1991
3. The vegetation and climate of northwest Iberia over the last 14,000 yr;Allen;J. Quat. Sci.,1996
4. The calculation of lead-210 dates assuming a constant rate of supply of unsupported 210Pb to the sediment;Appleby;Catena,1978
5. Palaeolimnological history of Lake Holzmaar (West Eifel, Germany) as indicated by diatom assemblages between 6,300 and 1,500 varve years BP;Baier,2000