Palaeolithic rock and cave art in Central Europe ? : Session 31 of the XIX International Rock Art Conference IFRAO 2015 "Symbols in the Landscape: Rock Art and its Context" held in Caceres (Spain) from the 31st of August until the 4th of September 2015 - Pastoors, Andreas, 1965-; Floss, Harald, 1960- (VML, Verlag Marie Leidorf GmbH, 2018)