English operator: Panoramio described at URL: https://web.archive.org/web/20161012062042/http://www.panoramio.com/photo/2795472...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019044128/http://www.panoramio.com/photo/19519686...
archive.org/web/20161013070332/http://www.panoramio.com/user/2134453?with_photo_id=18234372 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161028102143/http://www.panoramio.com/user/8091978?with_photo_id=101786990 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161012031309/http://www.panoramio.com/photo/14346329...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030190426/http://www.panoramio.com/photo/128953556...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031154409/http://www.panoramio.com/photo/128953617 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102155837/http://www.panoramio.com/photo/128953547 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031153901/http://www.panoramio.com/photo/128953613...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030190436/http://www.panoramio.com/photo/128953558...