Federal Office for Cartography and Geodesy, Landesamt für Vermessung und Geoinformation Bayern: digital topographical map 1:50,000 scale, "BayernViewer". Archived from the original on 2 July 2015. Retrieved 6 April 2018.{{cite web}}: CS1 maint: bot: original URL status unknown (link), retrieved 9 January 2011
