English operator: Panoramio described at URL: https://web.archive.org/web/20161029162929/http://www.panoramio.com/photo/104864114...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028080230/http://www.panoramio.com/photo/104864186...
English operator: Panoramio described at URL: https://web.archive.org/web/20161027030522/http://www.panoramio.com/photo/88076550 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102170131/http://www.panoramio.com/photo/104864195...