Angelov K. Main Architectures Used in ETL as a Tool, Necessary for the Integration of Data in Large Volumes - a Task in the Field of Digital Preservation of Cultural Heritage. DiPP [Internet]. 2016 Sep. 30 [cited 2024 May 6];6:129-36. Available from: https://dipp.math.bas.bg/dipp/article/view/dipp.2016.6.12