Reference

Christoph Spötl, Heinz Slupetzky, Ruth Drescher-Schneider [Drescher], Daniela Festi, Andreas G. Heiss, Paula J. Reimer (2017): An Early Würmian age for the inneralpine Halldorf site, Salzach Valley, Austria – Austrian Journal of Earth Sciences – 110_1: 109 - 121.