Maraghini, Maria Pia. «Il Fenomeno Abachistico a Supporto Dei Cambiamenti Socio-Economici: Arezzo Tra Il XIII Ed Il XVI Secolo = The Role of the Abacus Tradition for the Economic and Social Development of the Society: Evidence from Tuscany (Italy) Between XIII and XVI Century». Pecvnia : Revista de la Facultad de Ciencias Económicas y Empresariales, Universidad de León, no. 13 (diciembre 1, 2011): 25–58. Accedido agosto 16, 2022. https://revpubli.unileon.es/ojs/index.php/Pecvnia/article/view/602.