Stumbrienė D, Želvys R, Žilinskas J, Jakaitienė A. Using PIRLS and TIMSS data for the assessment of efficiency and effectiveness of primary education in post-socialist and old democracy EU member states. Lithuanian J. Statist. [Internet]. 2022 Dec. 20 [cited 2025 Apr. 26];61:1-15. Available from: https://journals.vu.lt./statisticsjournal/article/view/29667