Chukhnov AS, Pozdnyakov SN, Pangina NN. Analysis of the understanding of the material of theoretical informatics in competitions and olympiads in informatics. Computer Tools in Education [Internet]. 2018 Apr. 27 [cited 2026 Sep. 15];(2):55-67. Available from: http://cte.eltech.ru/ojs/index.php/kio/article/view/1536