Leon Ferrari

http://www.tate.org.uk/art/artworks?wp=7&aid=10613

http://www.ceciliadetorres.com/exhibitions/focus/len_ferrari_-_serie_de_errores_and_works_1962-2006

http://www.artnet.de/magazine/die-behauptete-form-auf-der-documenta-12/images/7/

http://www.alvarocastagnino.com.ar/artistas2/Leon_Ferrari

http://www.escala.org.uk/collection/artists/leon-ferrari/AUTH171/sin-titulo/O590

http://www.artishock.cl/2013/07/leon-ferrari-1920-2013/