Hefling, Stephen E. (2004). Nineteenth-century Chamber Music - Google ブックス. Routledge. page 290. ISBN 0415966507. Bases his dating and description on Fauquet's 1976 2-volume dissertation »Alexis de Castillon: Sa vie, Son oeuvre«, written for l'École Pratique des Hautes Études- see note, Hefling (2004), p. 313.