Ragalytė, Birutė, and Alma Paukštienė. “Education Mathematics in Real Life and Visualization in Periodical in Lithuania Between the Two Word Wars”. Lietuvos matematikos rinkinys 54, no. B (December 20, 2013): 173–177. Accessed November 7, 2025. https://www.zurnalai.vu.lt/LMR/article/view/17189.