Georgieva Trifonova, T., & Zdravkov, K. (2016). Digital library of scientific forums organized by the Faculty of Mathematics and Informatics of the University "St. Cyril and St. Methodius "- Veliko Tarnovo. Digital Presentation and Preservation of Cultural and Scientific Heritage, 6, 267–274. https://doi.org/10.55630/dipp.2016.6.29