archive.org/web/20161025082637/http://www.panoramio.com/user/2235739?with_photo_id=74792559 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161025083520/http://www.panoramio.com/user/2235739?with_photo_id=74792642 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161101203102/http://www.panoramio.com/user/284747?with_photo_id=115148825 operator: Panoramio described at URL: https://web.archive...
[online dossier]. Digithum, No. 14, pp. 94-104. UOC. ISSN 1575-2275 Date 31 May 2012 Source http://digithum.uoc.edu/ojs/index.php/digithum/article/vi...
panoramio.com/user/62601?with_photo_id=76783458 operator: Panoramio described at URL: https://web.archive.org/web/20161024234932/http://www.panoramio...
archive.org/web/20161024214611/http://www.panoramio.com/user/5964216?with_photo_id=74384348 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161025150719/http://www.panoramio.com/user/5964216?with_photo_id=74384460 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024222839/http://www.panoramio.com/photo/74384576 determination method...
Revista científica digital impulsada pels Estudis d’Arts i Humanitats. Date 31 May 2012 Source http://digithum.uoc.edu/ojs/index.php/digithum/article/vi...
archive.org/web/20161019215411/http://www.panoramio.com/user/2235739?with_photo_id=65332938 operator: Panoramio described at URL: https://web.archive...