@inproceedings{DUXU-v1-2011-LumiahoR,
	author        = "Lasse Lumiaho and Jussi Rämänen",
	booktitle     = "{Proceedings of the First International Conference on Design, User Experience, and Usability: Theory, Methods, Tools and Practice. Part I}",
	doi           = "10.1007/978-3-642-21675-6_55",
	isbn          = "978-3-642-21674-9",
	pages         = "475--484",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Electronic Invoicing in SMEs}",
	volume        = 6769,
	year          = 2011,
}