English operator: Panoramio described at URL: https://web.archive.org/web/20161025150259/http://www.panoramio.com/photo/89084832...
English operator: Panoramio described at URL: https://web.archive.org/web/20161011145827/http://www.panoramio.com/photo/9361415...
English operator: Panoramio described at URL: https://web.archive.org/web/20161025173141/http://www.panoramio.com/photo/89084824...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030082945/http://www.panoramio.com/photo/95364318...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028000659/http://www.panoramio.com/photo/95364304 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101081051/http://www.panoramio.com/photo/101329249 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031091942/http://www.panoramio.com/photo/127756065...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030190047/http://www.panoramio.com/photo/127756051...
English operator: Panoramio described at URL: https://web.archive.org/web/20161021122030/http://www.panoramio.com/photo/51003524...
English operator: Panoramio described at URL: https://web.archive.org/web/20161113234512/http://www.panoramio.com/photo/48701238...