David Carrson Berry The Meaning(s) of "without". An Exploration of Liszt's Bagatelle ohne Tonart in: 19th Century Music, Bd. 27, 2004, S. 230–262
Dolores Pesce Liszt's "Années de pèlerinage" Book 3. A "Hungarian" Cycle? in: 19th Century Music, Bd. 13, 1990, S. 207–229