ATSTĀJA, Dzintra. VIDES AIZSARDZĪBAS TEORIJA, PRAKSE UN PIEREDZE STUDIJU PROCESĀ THEORY, PRACTICE AND EXPERIENCE OF ENVIRONMENT PROTECTION IN STUDY PROCESS. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 127–133, 2015. DOI: 10.17770/etr2009vol2.1011. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1011.. Acesso em: 25 apr. 2024.