@inproceedings{POPL-1989-Thomsen,
	author        = "Bent Thomsen",
	booktitle     = "{Conference Record of the 16th Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/75277.75290",
	isbn          = "0-89791-294-2",
	pages         = "143--154",
	publisher     = "{ACM Press}",
	title         = "{A Calculus of Higher Order Communicating Systems}",
	year          = 1989,
}