English operator: Panoramio described at URL: https://web.archive.org/web/20161102030220/http://www.panoramio.com/photo/128557618 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102144940/http://www.panoramio.com/photo/128557604 determination method...
Panoramio described at URL: https://web.archive.org/web/20161014143927/http://www.panoramio.com/photo/33308702 determination method or standard: SHA-1...
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