http://nymag.com/scienceofus/2016/07/why-do-so-many-artists-have-synesthesia.html
http://www.synesthesiatest.org/blog/wassily-kandinsky-abstraction
https://psmag.com/mapping-the-brain-s-response-to-art-58dc42a82fd#.cxkkk3egd
http://www.webexhibits.org/vangogh/letter/11/256.htm
http://www.doctorhugo.org/synaesthesia/
http://www.huckmagazine.com/art-and-culture/art-2/meet-artist-turning-synesthesia-art/
http://nymag.com/scienceofus/2016/07/why-do-so-many-artists-have-synesthesia.html