Web Engineering 19th International Conference, ICWE 2019, Daejeon, South Korea, June 11-14, 2019, Proceedings - Bakaev, Maxim; Bakaev, Maxim; Frasincar, Flavius; Frasincar, Flavius; Ko, In-Young; Ko, In-Young (Springer International Publishing : Imprint: Springer, 2019)