SU, B.; YU, J.; SHENG, C. Borehole Electromagnetic Method for Exploration of Coal Mining Goaf. Elektronika ir Elektrotechnika, [S. l.], v. 22, n. 4, p. 37 - 40, 2016. DOI: 10.5755/j01.eie.22.4.15913. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/15913. Acesso em: 27 nov. 2021.