Integrated Approach to Assessing the Progress of Digital Transformation by Using Multiple Objective and Subjective Indicators Publication Type: Conference Proceedings Authors: Daniela Borissova; Zornitsa Dimitrova; Naiden Naidenov; Radoslav Yoshinov Source: Research Challenges in Information Science. RCIS 2022. Lecture Notes in Business Information Processing., Springer, Cham, Volume 446, p.626–634 (2022)