Hristova, D., Musolesi, M., & Mascolo, C. (2014). Keep Your Friends Close and Your Facebook Friends Closer: A Multiplex Network Approach to the Analysis of Offline and Online Social Ties. Proceedings of the International AAAI Conference on Web and Social Media, 8(1), 206-215. https://doi.org/10.1609/icwsm.v8i1.14544