Digital Transformation and Global Society 6th International Conference, DTGS 2021, St. Petersburg, Russia, June 23–25, 2021, Revised Selected Papers - Aleksandrov, Daniel A.; Boukhanovsky, Alexander V.; Chugunov, Andrei V.; Kabanov, Yury; Koltsova, Olessia; Musabirov, Ilya; Pashakhin, Sergei (Communications in Computer and Information Science, 2022)