English operator: Panoramio described at URL: https://web.archive.org/web/20161101125909/http://www.panoramio.com/photo/127616876...
English operator: Panoramio described at URL: https://web.archive.org/web/20161103171502/http://www.panoramio.com/photo/133824725...
English operator: Panoramio described at URL: https://web.archive.org/web/20161017112526/http://www.panoramio.com/photo/40575351...
English operator: Panoramio described at URL: https://web.archive.org/web/20161103063057/http://www.panoramio.com/photo/133824786 determination method...