LIEPLAPA, Līga. ZĀĢU SKAIDU IZGĀZTUVJU IETEKME UZ GRUNTSŪDEŅU KVALITĀTI. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 83–87, 1999. DOI: 10.17770/etr1999vol1.1899. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1899.. Acesso em: 7 may. 2024.