Nychkalo, Nellia, Larysa Lukianova, Natalya Bidyuk, Vitaliy Tretko, and Kateryna Skyba. 2020. “Didactic Aspects of Teachers’ Training for Differentiated Instruction in Modern School Practice in Ukraine”. International Journal of Learning, Teaching and Educational Research 19 (9):143-59. https://ijlter.myres.net/index.php/ijlter/article/view/246.