Novotná J, Kozánek Kiss T, Michal J, Vankúš P. Comparison of different types of reasoning & proof present in solved tasks from geometry in Slovak and Czech mathematics textbooks for lower secondary school . AUPC [Internet]. 2023 Dec. 30 [cited 2024 Sep. 16];15:49-67. Available from: https://didacticammath.uken.krakow.pl/article/view/10816