Citation:
Ahas R, Aasa A, Yuan Y, Raubal M, Smoreda Z, Liu Y, Ziemlicki C, Tiru M, Zook M. Everyday space–time geographies: using mobile phone-based sensor data to monitor urban activity in Harbin, Paris, and Tallinn. International Journal of Geographical Information Science [Internet]. 2015;29:2017-2039.