Wolfram Gerda Wolfram (ed): Palaeobyzantine notations III, Acta of the Congress held at Hernen Castle, The Netherlands, in march 2001. A. A. Bredius Foundations Peeters, Leuven - Paris - Dudly, MA, 2004
Volfram Gerda (ur): Paleovizantijska notacija III, Acta of the Congress held at Hernen Castle, The Netherlands, in March 2001. A. A. Bredius Foundations Peeters, Leuven - Paris - Dudly, MA, 2004
