Marketing aspects of sustainable urban development in small towns of the Republic of TatarstanAnna Shafigullina, Anastasiia Beloborodova, Roman Palyakin, Olga Martynova and Renat AhmetshinE3S Web Conf., 274 (2021) 10022DOI: https://doi.org/10.1051/e3sconf/202127410022