http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Breitkopf & Härtel critical ed. of 1884-1897.
Fierrabras, heroisch-romantische Oper in 3 Akten, op. 76.
American Musicological Society-Music Library Association reprint series