Variability of estimated contamination extent depending on calculation methods. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 2, p. 337–343, 2015. DOI: 10.17770/etr2015vol2.234. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4012.. Acesso em: 11 mar. 2026.