Did calcareous grasslands exist in prehistoric times? An archaeobotanical research on the surroundings of the prehistoric settlement above Kallmünz (Bavaria, Germany) - Baumann, A. (Charcoals from the Past. Cultural and Palaeoenvironmental Implications. Proceedings of the Third International Meeting of Anthracology, Cavallino - Lecce (Italy), June 28th - July 1st 2004., 2008)