Répertoire International des Sources Musicales – The organization, founded in Paris in 1952, is the largest and only global operation that documents written musical sources.
S. Hachmeier, R. Jäschke, and H. Saadatdoorabi. Proceedings of the Conference on ``Lernen, Wissen, Daten, Analysen'', 3341, page 213--226. Aachen, (2022)