@inproceedings{quercia11mood,
 author = {Daniele Quercia and  Jonathan Ellis and Licia Capra and Jon Crowcroft},
 title = {{In the Mood for Being Influential on Twitter }},
 booktitle = {Proceedings of the $3^{rd}$ IEEE Conference on Social Computing (SocialCom)},
 year = {2011},
month={October}
}