Kižlo, Marina, and Arvīds Kanbergs. “The Causes of the Parameters Changes of Soil Resistivity”. Electrical, Control and Communication Engineering 25, no. 25 (January 1, 2009): 43–46. Accessed November 5, 2024. https://ecce-journals.rtu.lv/ecce/article/view/v10144-009-0009-z.