https://data.bnf.fr/temp-work/f582a7b8cf5f498e52d0f97df9f20e70/
The Franks in the Aegean, 1204-1500
Toutes les informations de la Bibliotheque Nationale de France sur : The Franks in the Aegean, 1204-1500 - Peter Lock
the franksaegean
https://www.ub.edu/ubtv/index.php/en/node/122147
How to build a frontier: the Franks and the Spanish March | UBtv
how to buildthe franksfrontier