Information Systems: Research, Development, Applications, Education 12th SIGSAND/PLAIS EuroSymposium 2019, Gdansk, Poland, September 19, 2019, Proceedings - Wrycza, Stanisław; Wrycza, Stanisław; Maślankowski, Jacek; Maślankowski, Jacek (Springer International Publishing : Imprint: Springer, 2019)