@inproceedings{ADC-1991-FerrariGM,
	author        = "Gian Luigi Ferrari and Roberto Gorrieri and Ugo Montanari",
	booktitle     = "{Proceedings of the Fourth International Joint Conference on Theory and Practice of Software Development, Volume 2: Advances in Distributed Computing}",
	doi           = "10.1007/3540539816_56",
	isbn          = "3-540-53981-6",
	pages         = "29--48",
	publisher     = "{Springer}",
	title         = "{An Extended Expansion Theorem}",
	year          = 1991,
}