English operator: Panoramio described at URL: https://web.archive.org/web/20161102055514/http://www.panoramio.com/photo/116690131...
English operator: Panoramio described at URL: https://web.archive.org/web/20161014090414/http://www.panoramio.com/photo/29025414...
English operator: Panoramio described at URL: https://web.archive.org/web/20161014054426/http://www.panoramio.com/photo/29025425 determination method...
archive.org/web/20161103063429/http://www.panoramio.com/user/2353739?with_photo_id=132263000 operator: Panoramio described at URL: https://web.archive...