Dies dignus decorari / Demon dolens / Iste confessor

Bibliography

Lewis, Anthony (ed.) 1951-. Musica Britannica: A National Collection of Music.  London. pp. 67-69.

Adler, Guido (ed.) 1894-1970. Denkmäler der Tonkunst in Österreich.  Graz and Vienna. pp. (76), 37-39.