Ilyashenko, L., M. Gladkova, M. Kutepov, O. Vaganova, and Z. Smirnova. “Development of Communicative Competencies of Students in the Context of Blended Learning”. Amazonia Investiga, Vol. 8, no. 18, Feb. 2019, pp. 313-22, https://amazoniainvestiga.info/index.php/amazonia/article/view/313.