Stanchev, Peter, Hristiyaniya Ancheva, and Aneta Karaivanova. “The 12th National Information Day: Open Science, Open Data, Open Access, Bulgarian Open Science Cloud”. Digital Presentation and Preservation of Cultural and Scientific Heritage 11 (September 10, 2021): 333–340. Accessed May 3, 2024. https://dipp.math.bas.bg/dipp/article/view/dipp.2021.11.33.