BORIS YARMAKHOV; SERGEY SUMATOKHIN. A DIGITAL ADAPTIVE TEXTBOOK FOR SECONDARY BIOLOGY EDUCATION: DEVELOPMENT AND TESTING. PUPIL: International Journal of Teaching, Education and Learning, [S. l.], p. 190–199, 2026. DOI: 10.20319/ictel.2026.190199. Disponível em: http://www.grdspublishing.org/index.php/PUPIL/article/view/3218. Acesso em: 15 jun. 2026.