Belogrudova L, Dudareva I, Kashcheyevs V, Voitkans A. NATIONAL PHYSICS OLYMPIADS FROM THE POINT OF VIEW OF PARTICIPANTS AND PHYSICS TEACHERS. SIE [Internet]. 2021 May 28 [cited 2024 May 6];2:84-95. Available from: https://journals.ru.lv/index.php/SIE/article/view/6209