Górowski, J. and Łomnicki, A. (2017) “#960”;, Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia, 5, pp. 71–76. Available at: https://didacticammath.uken.krakow.pl/article/view/3671 (Accessed: 21 November 2024).