Ljevak Lebeda, I., J. Mijoc, and N. Tomašević. “CRITICAL EXAMINATION OF THE IEET MEASUREMENT INSTRUMENT FOR THE ASSESSMENT OF TEXTBOOK QUALITY”. Ekonomski vjesnik/Econviews - Review of Contemporary Business, Entrepreneurship and Economic Issues, vol. 31, no. 2, Dec. 2018, pp. 275-86, https://hrcak.srce.hr/ojs/index.php/ekonomski-vjesnik/article/view/7430.