LAMPING, A. J.: Ulrichus Velenus (Oldrich Velensky) and his treatise against the Papacy, Studies in Medieval and Reformation Thought 19 (Leiden, E. J. Brill, 1976). X-292 págs.
García y García, Antonio (1977). LAMPING, A. J.: Ulrichus Velenus (Oldrich Velensky) and his treatise against the Papacy, Studies in Medieval and Reformation Thought 19 (Leiden, E. J. Brill, 1976). X-292 págs. ANUARIO DE HISTORIA DEL DERECHO ESPAÑOL. pp. 869-870
