Allen Forte Liszt's Experimental Idiom and the Music of the Early Twentieth Century in: 19th Century Music, Bd. 10, 1987, S. 209–228
Andrew Bonner Liszt's "Les Préludes" and "Les Quatre Élémens". A Reinvestigation in: 19th Century Music, Bd. 10, 1986, S. 95–107