Futuristic Trends in Network and Communication Technologies Third International Conference, FTNCT 2020, Taganrog, Russia, October 14–16, 2020, Revised Selected Papers, Part II - Singh, Pradeep Kumar; Veselov, Gennady; Pljonkin, Anton; Kumar, Yugal; Paprzycki, Marcin; Zachinyaev, Yuri (Springer Singapore, 2021)