MORAVCOVÁ, V.; ROBOVÁ, J.; HROMADOVÁ, J.; HALAS, Z. Students’ understanding of axial and central symmetry. Journal on Efficiency and Responsibility in Education and Science, [S. l.], v. 14, n. 1, p. 28-40, 2021. DOI: 10.7160/eriesj.2021.140103. Disponível em: https://www.eriesjournal.com/index.php/eries/article/view/405. Acesso em: 11 apr. 2021.