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. (2011). Pecvnia : Revista De La Facultad De Ciencias Económicas Y Empresariales, Universidad De León, 13, 25-58. https://doi.org/10.18002/pec.v0i13.602