@inproceedings{IWPTS-1992-Koster,
	author        = "Rüdiger Köster",
	booktitle     = "{Proceedings of the Fifth International Workshop on Protocol Test Systems}",
	isbn          = "0-444-89980-4",
	pages         = "291",
	publisher     = "{North-Holland}",
	series        = "{IFIP Transactions}",
	title         = "{Problems and Difficulties with GSM Protocol Conformance Testing}",
	volume        = "C-11",
	year          = 1992,
}