Pannonhalma - Charter of the convent
The first charter of the convent of Pannonhalma (1201)
Mons Sacer 996-1996. Pannonhalma ezer éve. Szerk.: Takács Imre. Pannonhalma, 1996, volume I. p 499, section IV.1.
The Archieves of the Pannonhalma Benedictine Abbey