Anna Harwell Celenza The Poet, the Pianist and the Patron. Hans Christian Andersen and Franz Liszt in Carl Alexander's Weimar in: 19th Century Music, Bd. 26, 2003, S. 130–154
Andrew Bonner Liszt's "Les Préludes" and "Les Quatre Élémens". A Reinvestigation in: 19th Century Music, Bd. 10, 1986, S. 95–107