Mykola Yakymchuk, Ignat Korchagin. ON THE POSSIBILITY OF FREQUENCY-RESONANCE METHODS USING TO DETERMINE THE PRESENCE OF CHEMICAL ELEMENTS IN MINERALS, ROCKS AND SEDIMENTS OF CROSS-SECTION. FTML [Internet]. 2023 Jan. 15 [cited 2026 Jun. 17];(1). Available from: https://ojs.scipub.de/index.php/FTML/article/view/628