Javier E. Sierra, Santander De la Ossa Guerra, and María F. Sierra. “ANALYSIS OF INDICATORS FOR THE IMPROVEMENT OF VIRTUAL EDUCATION THROUGH BUSINESS INTELLIGENCE TECHNIQUES: CASE FOR HIGHER EDUCATION”. PalArch’s Journal of Archaeology of Egypt / Egyptology, vol. 18, no. 08, July 2021, pp. 2902-19, https://www.archives.palarch.nl/index.php/jae/article/view/9251.