Articles (2)
- Leo W.S. De Graaff, Ángel Rodés, Raimon Pallàs Serra, Niels S. Anders, Harry Arie Christoffel Seijmonsbergen, G.G. Mat De Jong (2023): Be age datings of Late Würmian erratics from Vorarlberg (Austria) and southern Germany – Inatura Forschung online – 106: 1 - 6.
- Leo W.S. De Graaff, Harry Arie Christoffel Seijmonsbergen (2001): Postglacial landslides and their impact on Pleistocene lake floor deposits in the Balderschwang Valley as witnessed by geomorphological, sedimentological and geophysical evidence (Vorarlberg, Austria). – Vorarlberger Naturschau - Forschen und Entdecken – 9: 237 - 251.