WMESS 2020 : abstract collection book. 6th World Multidisciplinary Earth Sciences Symposium 2020. Prague, Czech Republic, 07-11 September, 2020 [elektronický zdroj]. 1. vyd. Prague : [s.n.], 2020. online, 166 s. Available on Internet: <https://www.mess-earth.org/files/WMESS2020_Book.pdf>