Sign Language Communication Through an Interactive Mobile Application. - Andreas Stergioulas; Christos Chatzikonstantinou; Theocharis Chatzis; Ilias Papastratis; Dimitrios Konstantinidis; Kosmas Dimitropoulos; Klimnis Atzakas; George J. Xydopoulos; Vassia Zacharopoulou; Dimitris Papazachariou; Vasilis Aggelidis; Kostas Grigoriadis; et al. (HCI (44), 2023)