@inproceedings{POPL-2003-JensenM,
	author        = "Ole Høgh Jensen and Robin Milner",
	booktitle     = "{Conference Record of the 30th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/640128.604135",
	editor        = "Alex Aiken and Greg Morrisett",
	isbn          = "1-58113-628-5",
	pages         = "38--49",
	publisher     = "{ACM}",
	title         = "{Bigraphs and transitions}",
	year          = 2003,
}