OSN mood tracking: exploring the use of online social network activity as an indicator of mood changes. - James Alexander Lee; Christos Efstratiou; Lu Bai 006 (UbiComp Adjunct, 2016)

SnapAppy: A positive psychology intervention using smartphone photography to improve emotional well-being. - James Alexander Lee; Christos Efstratiou; Panote Siriaraya; Dinkar Sharma; Chee Siang Ang (Pervasive Mob. Comput., 2021)