Teirumnieka, Ērika, Ilmārs Kangro, Edmunds Teirumnieks, and Harijs Kalis. “The Analytical Solution of the 3D Model With Robin’s Boundary Conditions for 2 Peat Layers”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 16, 2015): 186–192. Accessed May 1, 2025. https://journals.ru.lv/index.php/ETR/article/view/618.