English operator: Panoramio described at URL: https://web.archive.org/web/20161031142002/http://www.panoramio.com/photo/124961198...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028203424/http://www.panoramio.com/photo/90157201...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030172741/http://www.panoramio.com/photo/124961226...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101183310/http://www.panoramio.com/photo/124961189...
English operator: Panoramio described at URL: https://web.archive.org/web/20161015070958/http://www.panoramio.com/photo/37834397 determination method...
archive.org/web/20161014203334/http://www.panoramio.com/user/1038849?with_photo_id=37833750 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161013094331/http://www.panoramio.com/user/1038849?with_photo_id=5914226 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161025153436/http://www.panoramio.com/user/1763701?with_photo_id=71505398 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161025151803/http://www.panoramio.com/user/1763701?with_photo_id=71504929 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161025235851/http://www.panoramio.com/user/1763701?with_photo_id=71505493 operator: Panoramio described at URL: https://web.archive...