José Antonio Bowen, E. Douglas Bomberger An Annotated Bibliography of Students and Observers of Liszt's Teaching in: JALS, Bd. 52/53, 2003, S. 44-63
E. Douglas Bomberger Charting the Future of "Zukunftsmusik". Liszt and the Weimar Orchesterschule in: The Musical Quarterly, Bd. 80, 1996, S. 348–361
E. Douglas Bomberger Toward a Definitive Register of Liszt's American Students in: JALS, Bd. 33, 1993, S. 50–58
Robert Stevenson Liszt's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932). Part I in: JALS, Bd. 21, 1987, S. 42–58
Robert Stevenson Liszt's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932). Part II in: JALS, Bd. 22, 1987, S. 27–45
Robert Stevenson Liszt in the Iberian Penisula in: Inter-American Music Review, Bd. 7, Frühling-Sommer 1986, S. 3–22
Robert Stevenson Liszt 's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932) in: Inter-American Music Review, Bd. 7, 1986, S. 33–78