Human-computer interaction – INTERACT 2019 17th IFIP TC 13 International Conference, Paphos, Cyprus, September 2–6, 2019 : proceedings, part II - Lamas, David Ribeiro 1966-; Loizides, Fernando; Nacke, Lennart; Petrie, Helen; Winckler, Marco; Zaphiris, Panayiotis (Springer, 2019)