Zhelev Y. Improvement the Competences of the Specialists Engaged with the Cultural and Scientific Heritage Digitization in the Information Security and Risk Management Systems: ISTRA Approach. DiPP [Internet]. 2018 Sep. 3 [cited 2024 Dec. 26];8:189-96. Available from: https://dipp.math.bas.bg/dipp/article/view/dipp.2018.8.18