@inproceedings{BX-2017-JohnsonR,
	author        = "Michael Johnson and Robert Rosebrugh",
	booktitle     = "{Proceedings of the Sixth International Workshop on Bidirectional Transformations}",
	editor        = "Romina Eramo and Michael Johnson",
	openpdf       = "http://ceur-ws.org/Vol-1827/paper8.pdf",
	pages         = "39--53",
	publisher     = "{CEUR-WS.org}",
	series        = "{CEUR Workshop Proceedings}",
	title         = "{Universal Updates for Symmetric Lenses}",
	url           = "http://ceur-ws.org/Vol-1827/#paper8",
	volume        = 1827,
	year          = 2017,
}