HASSELKUS, H.; REITZE, A. Sonar surveying of caverns and 3D modelling of entire cavern fields. Geology, Geophysics and Environment, [S. l.], v. 38, n. 2, p. 251, 2012. DOI: 10.7494/geol.2012.38.2.251. Disponível em: https://ggae.agh.edu.pl/index.php/geol/article/view/210. Acesso em: 18 jan. 2025.