English operator: Panoramio described at URL: https://web.archive.org/web/20161025203639/http://www.panoramio.com/photo/82236548...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019202340/http://www.panoramio.com/photo/67989928 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030222115/http://www.panoramio.com/photo/124616403...
Panoramio described at URL: https://web.archive.org/web/20161015040748/http://www.panoramio.com/photo/30027602 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161024113835/http://www.panoramio.com/photo/72914098 determination method or standard: SHA-1...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023230541/http://www.panoramio.com/photo/67911452 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030222342/http://www.panoramio.com/photo/124616392...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102223314/http://www.panoramio.com/photo/80534123 determination method: SHA-1...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031110429/http://www.panoramio.com/photo/125172750...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101171215/http://www.panoramio.com/photo/124613940...