panoramio.com/user/74349?with_photo_id=82856201 operator: Panoramio described at URL: https://web.archive.org/web/20161025083326/http://www.panoramio...
Jorge A.; NAVARRO SANZ, Santiago; SAORÍN, Tomás (2012). "Wiki Loves Monuments 2011: the experience in Spain and reflections regarding the diffusion...
