@inproceedings{PPDP-2000-Rocca,
	author        = "Simona Ronchi Della Rocca",
	booktitle     = "{Proceedings of the Second International Conference on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/351268.351272",
	pages         = "24--31",
	title         = "{Operational semantics and extensionality}",
	year          = 2000,
}