SmartHypnos: An Android application for low-cost sleep self-monitoring and personalized recommendation generation. - Panteleimon Chriskos; Christos A. Frantzidis; Christina Plomariti; Emmanouil Papanastasiou; Athanasia Pataka; Chrysoula Kourtidou-Papadeli; Panagiotis D. Bamidis (Comput. Biol. Medicine, 2025)