E. G. Vrublevskaya and A. A. Artyukhina, “Professional pedagogical olympiads as a type of informal education and a means of developing pedagogical skills”, Pedagogika, vol. 90, no. 3, pp. 54–63, Mar. 2026, Accessed: Nov. 03, 2026. [Online]. Available: https://ojs.owebs.ru/pedagogika/article/view/30549