N. Thanh Trieu, Z. E. S. Williams, J.-F. M. Dorville, H. Xuan Huynh, V. Rodin, and B. Pottier, “Open Data for Environment Sensing: Crowdsourcing Geolocation Data”, EAI Endorsed Trans Context Aware Syst App, vol. 7, no. 20, p. e4, May 2020.