LYSOVA , N. M.; DRĖGŪNAS , V. P. To the methods of the axiom, theorem, definition and proving by means of contradiction concepts presentation in the course of geometry in the 6th form. Psichologija, [S. l.], v. 12, p. 75–89, 1972. DOI: 10.15388/Psichol.1972.12.9268. Disponível em: https://www.journals.vu.lt/psichologija/article/view/9268.. Acesso em: 6 may. 2024.