Lepik, Madis. “ANALYZING THE USE OF TEXTBOOK IN MATHEMATICS EDUCATION: THE CASE OF ESTONIA”. Acta Paedagogica Vilnensia 35 (December 28, 2015): 90–102. Accessed October 27, 2025. https://test.zurnalai.vu.lt/acta-paedagogica-vilnensia/article/view/9193.