English operator: Panoramio described at URL: https://web.archive.org/web/20161025045351/http://www.panoramio.com/photo/81519866...
English operator: Panoramio described at URL: https://web.archive.org/web/20161025075744/http://www.panoramio.com/photo/81520380 determination method: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161020031951/http://www.panoramio.com/photo/55061575 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161023071917/http://www.panoramio.com/photo/55061647 determination method or standard: SHA-1...