Potential of underground minewater in Estonian oil shale mining regionValgma, Ingo; Robam, Karin; Karu, Veiko; Kolats, Margit; Väizene, Vivika; Otsmaa, Merle9th International Symposium "Topical problems in the field of electrical and power engineering". Doctoral school of energy and geotechnology. II : Pärnu, Estonia, June 14-19, 20102010 / p. 63-68 : ill https://www.researchgate.net/publication/235424907_Potential_of_underground_minewater_in_Estonian_oil_shale_mining_region