CHROMČÁK, Jakub, Michal GRINČ, Jaroslava PÁNISOVÁ, Peter VAJDA, and Anna KUBOVÁ. 2016. “Validation of Sensitivity and Reliability of GPR and Microgravity Detection of Underground Cavities in Complex Urban Settings: Test Case of a Cellar”. Contributions to Geophysics and Geodesy 46 (1), 13-32. https://doi.org/10.1515/congeo-2016-0002.