Bibliography

http://www.biography.com/people/paul-klee-9366304

http://www.paulklee.net/death-and-fire.jsp

http://www.scleroderma.org/site/PageNavigator/patients_whatis.html

http://www.karger.com/Book/Home/253712

http://www.oilpaintinginfo.com/death-and-fire-by-paul-klee/

http://www.theartstory.org/artist-klee-paul.htm

http://www.economist.com/news/books-and-arts/21587187-big-show-strange-and-enchanting-work-londons-tate-modern-shape-shifting

Kagan, Andrew (1993) Paul Klee at the Guggenheim Museum (exhibition catalogue) [1] Introduction by Lisa Dennison, essay by Andrew Kagan. 208 pages. English and Spanish editions.