Günther, Ursula. 1994. Composers at the Court of the Antipopes in Avignon: Research in the Vatican Archives. Musicology and Archival Research, edited by Barbara H. Haggh, Frank Daelemans,  and André Vanrie, 328–37. Brussels: Algemeen Rijksarchief.

Fallows, David, Karl Kügle, and Eugeen Schreurs. 1994. Fourteenth- and Fifteenth-Century Music Fragments in Tongeren. Musicology and Archival Research, edited by Barbara H. Haggh, Frank Daelemans,  and André Vanrie, 472–521. Brussels: Algemeen Rijksarchief.