Enterprise Information Systems 20th International Conference, ICEIS 2018, Funchal, Madeira, Portugal, March 21-24, 2018, Revised Selected Papers - Hammoudi, Slimane; Hammoudi, Slimane; Śmiałek, Michał; Śmiałek, Michał; Camp, Olivier; Camp, Olivier; Filipe, Joaquim; Filipe, Joaquim (Springer International Publishing : Imprint: Springer, 2019)