@inproceedings{CIKM-2012-LiS,
	author        = "Cheng-Te Li and Man-Kwan Shan",
	booktitle     = "{Proceedings of the 21st ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2396761.2398644",
	isbn          = "978-1-4503-1156-4",
	pages         = "2375--2378",
	publisher     = "{ACM}",
	title         = "{Composing activity groups in social networks}",
	year          = 2012,
}