ERTS, Ervīns; LAIZĀNE, Ināra. WATER QUALITY RESEARCH NEAR OŠUPES MANOR. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, Rezekne, Latvia, n. 20, p. 273–278, 2016. DOI: 10.17770/het2016.20.3527. Disponível em: https://journals.ru.lv/index.php/HET/article/view/3527.. Acesso em: 2 may. 2024.