Emil J. Polak. Medieval and Renaissance letter treatises and form letters, [t. I], A census of manuscripts found in Eastern Europe and the Former U.S.S.R. ; [t. II], A census of manuscripts found in part of Western Europe, Japan and the United States of America [...]. Leyde, New York, Cologne : E. J. Brill, 1993-1994. 2 vol. in-8°, XXII-326 et XVIII-476 pages. (University of California [Davis], Davis medieval texts and studies, 8-9.)

Emil J. Polak. Medieval and Renaissance letter treatises and form letters, [t. I], A census of manuscripts found in Eastern Europe and the Former U.S.S.R. ; [t. II], A census of manuscripts found in part of Western Europe, Japan and the United States of America [...]. Leyde, New York, Cologne : E. J. Brill, 1993-1994. 2 vol. in-8°, XXII-326 et XVIII-476 pages. (University of California [Davis], Davis medieval texts and studies, 8-9.). In: Bibliothèque de l'école des chartes. 1999, tome 157, livraison 1. pp. 239-240