Prols, Janis, Ērika Teirumnieka, and Edmunds Teirumnieks. “Distribution of Iron and Iron Compounds in the Kemeri - Jaunkemeri Occurence of Sulphide Water”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 17, 2015): 244–250. Accessed May 8, 2024. https://journals.ru.lv/index.php/ETR/article/view/626.