Tretjakova R, Kodors S, Soms J, Alksnis A. CLAY DETECTION IN LAKES OF LATGALE USING GROUND PENETRATING RADAR. ETR [Internet]. 2019 Jun. 20 [cited 2024 Dec. 22];1:291-7. Available from: https://journals23.rta.lv/index.php/ETR/article/view/4046