Digital Economy. Emerging Technologies and Business Innovation: 5th International Conference on Digital Economy, ICDEc 2020, Bucharest, Romania, June 11–13, 2020, Proceedings - Bach Tobji; Jallouli, Rim; Pocatilu, Paul; Samet, Ahmed; Strat, Vasile Alecsandru; Touzani, Mourad (Springer International Publishing, 2020)