1. A. Mislove, S. Lehmann, Y.-Y. Ahn, J.-P. Onnela, and J. N. Rosenquist, “Understanding the demographics of twitter users,” ICWSM, vol. 11, p. 5th, 2011.
2. D. Ruths and J. Pfeffer, “Social media for large studies of behavior,” Science, vol. 346, no. 6213, pp. 1063–1064, 2014.
3. B. Pan, Y. Zheng, D. Wilkie, and C. Shahabi, “Crowd sensing of traffic anomalies based on human mobility and social media,” in Proceedings of the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems. ACM, 2013, pp. 344–353.
4. Song, C., Qu, Z., Blumm, N., Barabási, A.-L.: Limits of predictability in human mobility. Science, vol. 327, no. 5968, pp. 1018–1021 (2010).
5. D. Zhang, H. Wang, and D. Wu, “Toward centimeter-scale human activity sensing with Wi-Fi signals,” IEEE Computer, vol. 50, no. 1, pp. 48–57, 2017.