Kovačević, Biljana. “The Development of a New SOFI Model for Performance Management of Medium-Sized and Large Companies”. Decision Making: Applications in Management and Engineering 6, no. 2 (June 21, 2023): 95–125. Accessed September 13, 2025. https://www.dmame-journal.socialspacejournal.eu/index.php/dmame/article/view/754.