Ivanovs, A. and Varfolomeyev, A. 2019. The Representation of Facts about Old Russian Charters on the Semantic Web: Attempto Controlled English (ACE). Slavistica Vilnensis. 64, 1 (Nov. 2019), 72–86. DOI:https://doi.org/10.15388/SlavViln.2019.64(1).06.