Strode, Skaidrīte, and Gotfrīds Noviks. “THE CONCEPT OF ECOSYSTEM SERVICES”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 26 (January 9, 2023): 53–58. Accessed April 27, 2024. https://journals.ru.lv/index.php/HET/article/view/6955.