E. Kónya and G. Szanyi, “Report of Meeting Researches in Didactics of Mathematics and Computer Sciences: February 1-3, 2019 Stúrovo, Slovakia”, Teach. Math. Comp. Sci., vol. 17, no. 1, pp. 105–129, Jul. 2019, doi: 10.5485/TMCS.2019.R029.