SOFSEM 2020: theory and practice of computer science 46th International Conference on Current Trends in Theory and Practice of Informatics, SOFSEM 2020, Limassol, Cyprus, January 20-24, 2020 : proceedings - Chatzigeorgiou, Alexander; Dondi, Riccardo; Herodotou, Herodotos; Kapoutsis, Christos; Manolopoulos, Yannis 1957-; Papadopoulos, George A. 1960-; Sikora, Florian (Springer, 2020)