GUČEV, D. Kačurkov, M. Tolev, V. DETERMINATION OF THE GROUNDWATER FILTRATION VELOCITY BY USING THE RADIOAKTIVE ISOTOPIES (in Macedonian). Matematichki Bilten, [S. l.], v. 17, n. 1, 1967. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1298. Acesso em: 13 jun. 2026.