Łyczak, M., Adamiec, J., Skupień, T., Małysa, T. and Groffik, A. 2018. Georadar surveys of the flooring in the St. Francis of Assisi basilica in Krakow. Geology, Geophysics and Environment. 44, 4 (Dec. 2018), 357. DOI:https://doi.org/10.7494/geol.2018.44.4.357.