Mating thickness soft sediments in mining area using the HVSR method : [abstract] / Dorota OLSZEWSKA, Stanisław LASOCKI // W: XXXI. Polish-Czech-Slovakian Symposium on Mining and Environmental Geophysics : September 24–27, 2007, Janov nad Nisou, Czech Republic : proceedings / eds. Vladimír Rudajev, Roman Živor ; exec. ed. Jaroslava Svítilová. — Praha : Institute of Geology of the Academy of Sciences of the Czech Republic, 2008. — ISBN: 978-80-903511-8-9. — S. 71