Blaszczyk, J. “The Find of the Denarii of Bolesław the Curly on Site 1 at Wilkowice Near Łódź, Wartkowice Commune”. Acta Universitatis Lodziensis. Folia Archaeologica, no. 20, Jan. 1996, pp. 69-78, doi:10.18778/0208-6034.20.06.