archive.org/web/20161031064538/http://www.panoramio.com/user/7050661?with_photo_id=113553728 operator: Panoramio described at URL: https://web.archive...
the presentation Image: 1024px-Guard_and_Lamp_-_Buckingham_Palace_-_geograph.org.uk__2641423.jpg Bürger, Moritz, Stephan Schlögl, and Hannah Schmid-Petri...
archive.org/web/20161031220129/http://www.panoramio.com/user/1812155?with_photo_id=121330901 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161023181437/http://www.panoramio.com/user/644221?with_photo_id=50840504 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030100400/http://www.panoramio.com/photo/100984209...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030005153/http://www.panoramio.com/photo/100984270...
archive.org/web/20161103002813/http://www.panoramio.com/user/3794713?with_photo_id=51522932 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028105058/http://www.panoramio.com/photo/100983620...
archive.org/web/20161017202924/http://www.panoramio.com/user/2332377?with_photo_id=44941272 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028132336/http://www.panoramio.com/photo/108325992 determination method...