«Certum testimonium»: notarial acts and mercantile-financial relations (Asti and Southern Piedmont, 13th-14th centuries): Peer reviewed article. irlh [Internet]. 2021 Dec. 22 [cited 2026 Jul. 28];(7):645-59. Available from: https://test-ojs-unimi-it.archicoop.it/index.php/irlh/article/view/16903