Bikse, Jānis, and Mahender Reddy Gavinolla. “WATER SPRINGS AS A RESOURCE FOR NATURE TOURISM IN LATVIA: A TOURIST PERSPECTIVE”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 30–37. Accessed May 17, 2024. https://journals.ru.lv/index.php/ETR/article/view/6614.