Dimitrova, Ludmila, Ralitsa Dutsova, and Rumiana Panova. “Information Technologies for the Preservation of Language Heritage”. Digital Presentation and Preservation of Cultural and Scientific Heritage 1 (September 30, 2011): 140–150. Accessed March 29, 2024. https://dipp.math.bas.bg/dipp/article/view/dipp.2011.1.15.