SOFSEM 2018: Theory and Practice of Computer Science 44th International Conference on Current Trends in Theory and Practice of Computer Science, Krems, Austria, January 29 - February 2, 2018, Proceedings - Tjoa, A Min; Tjoa, A Min; Bellatreche, Ladjel; Bellatreche, Ladjel; Biffl, Stefan; Biffl, Stefan; van Leeuwen, Jan; van Leeuwen, Jan; Wiedermann, Jiří; Wiedermann, Jiří (Springer International Publishing : Imprint: Edizioni della Normale, 2018)