@inproceedings{Volkovich2012, author = {Y. Volkovich and S. Scellato and D. Laniado and C. Mascolo and A. Kaltenbrunner}, title = {{The length of bridge ties: structural and geographic properties of online social interactions.}}, booktitle = {ICWSM-12 - 6th International AAAI Conference on Weblogs and Social Media}, publisher = {The AAAI Press}, location = {Dublin, Ireland}, year = 2012 }