Abdounur, Oscar Joao Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
http://www.mpiwg-berlin.mpg.de/Preprints/P181.PDF (Preprint)
P181.PDF (Preprint), 29MB
Abdounur, O. J. (2001). Ratios and music in the late Middle Ages: a preliminary survey. Berlin: Max-Planck-Institut für Wissenschaftsgeschichte.