@Article{TMML10:characterising,
author = {John Tang, Mirco Musolesi, Cecilia Mascolo and Vito Latora},
title = {{Characterising Temporal Distance and Reachability in Mobile and Online Social Networks}},
journal = {ACM SIGCOMM Computer Communication Review},
year = {2010},
volume = {40},
number = {1},
pages = {118--124},
month = {January}
}