RESEARCH OF GUIDELINES FOR DESIGNING E-STUDY MATERIALS. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 2, p. 90–96, 2017. DOI: 10.17770/etr2017vol2.2560. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4069.. Acesso em: 11 mar. 2026.