The first data on methane concentrations in degassing griffins of Lake BaskunchakDmitry N. Garkusha, Yuri A. Fedorov, Boris V. Talpa, Roman G. Trubnik and Evgeny A. KovalevE3S Web Conf., 407 (2023) 02012DOI: https://doi.org/10.1051/e3sconf/202340702012