Kurilova, Julija, and Eugenijus Kurilovas. “Index of Mathematics Learning Activities Suitability to Learners”. Lietuvos matematikos rinkinys 57, no. B (December 20, 2016): 49–54. Accessed November 14, 2025. https://www.zurnalai.vu.lt/LMR/article/view/17735.