“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, no. 13, pp. 25–58, Dec. 2011, doi: 10.18002/pec.v0i13.602.