From GPS to semantic data: how and why - a framework for enriching smartphone trajectories. - Ahmed Ibrahim; Heng Zhang 017; Sarah Clinch; Simon Harper (Computing, 2021)

Passive social sensing with smartphones: a systematic review. - Heng Zhang 017; Ahmed Ibrahim; Bijan Parsia; Ellen Poliakoff; Simon Harper (Computing, 2023)

Tracking social behaviour with smartphones in people with Parkinson's: a longitudinal study. - Heng Zhang 017; Bijan Parsia; Ellen Poliakoff; Simon Harper (Behav. Inf. Technol., 2024)