6th 6th World Multidisciplinary Earth Sciences Symposium - WMESS 2020 : proceedings. 7-11 September 2020, Prague, Czech Republic. -- 1. vyd. -- Bristol : IOP Publishing, 2020. -- online. -- (IOP Conference Series: Earth and Environmental Science, volume 609). -- ISSN : 1755-1307. -- 1755-1315 (online).