@inproceedings{SOFTVIS-2006-SiebenhallerK,
	author        = "Martin Siebenhaller and Michael Kaufmann",
	booktitle     = "{Proceedings of the ACM Symposium on Software Visualization}",
	doi           = "10.1145/1148493.1148523",
	isbn          = "1-59593-464-2",
	pages         = "159--160",
	publisher     = "{ACM}",
	title         = "{Drawing activity diagrams}",
	year          = 2006,
}