Artcyclopedia: Frantisek Kupka - Links to works by the artist in art museum sites and image archives worldwide. www.artcyclopedia.com/artists/kupka_frantisek.html
ArtMagick: Frantisek Kupka - Short biography and illustrations of several works including 'The Principle of Life'. www.artmagick.com/artists/kupka.aspx
Guggenheim Collection: Frantisek Kupka - Works in the collection, biography, and suggested reading. www.guggenheimcollection.org/site/artist_works_82_0.html
