Vaganova OI, Odarich IN, Rudakova OA, Volkova JS, Bulaeva MN. Level differentiation technology in vocational education. AmazInv [Internet]. 21 de abril de 2020 [citado 20 de noviembre de 2025];9(28):42-9. Disponible en: https://www.amazoniainvestiga.info/index.php/amazonia/article/view/1279