Stephan Kuttner, Reinhard Elze: A catalogue of canon and Roman law manuscripts in the Vatican Library. Vol. 1-2, Città del Vaticano 1986-1987 (Studi e testi 322 and 328) [up to Vat. lat. 2935]. Draft materials for vol. 3 were published by Martin Bertram and Gero Dolezalek under http://home.uni-leipzig.de/jurarom/manuscr/VaticanCatalogue/indexvatican.html. The state of the project till 2013 was canvassed by Martin Bertram and Gero Dolezalek in the following article: The catalogue of juridical manuscripts in the Vatican Library: a report on the present state of an uncompleted project. – Miscellanea Bibliothecae Vaticanae 20 (2014) 155-198.