Recessive Social Trends in the Coal-Mining Region (on Example of Kuzbass) as a Barrier for Sustainable DevelopmentElena Morozova, Anna Mukhacheva, Tatiana Dobrydina and Nadezhda UsvyatE3S Web Conf., 41 (2018) 04029DOI: https://doi.org/10.1051/e3sconf/20184104029