Staša, Jānis, and Arnolds Šķēle. “FOREST RESOURCES AND HUMAN SAFETY”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 168–173. Accessed November 23, 2024. https://journals.ru.lv/index.php/ETR/article/view/1954.