Hristova, D. et al. 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 (May 2014), 206–215. DOI:https://doi.org/10.1609/icwsm.v8i1.14544.