Review of methodological issues of application of geographic information systems in service maps and their compilationSarvar Abdurakhmonov, Mamatkodir Nazarov, Olimjon Allanazarov, Murat Yakubov and Nasiba ShamsievaE3S Web Conf., 284 (2021) 02004DOI: https://doi.org/10.1051/e3sconf/202128402004