1.
Lysova NM, Drėgūnas VP. 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. PSY [Internet]. 1972 Jan. 8 [cited 2024 Jul. 6];12:75-89. Available from: https://www.journals.vu.lt/psichologija/article/view/9268