@inproceedings{POPL-1999-WaddellD,
	author        = "Oscar Waddell and R. Kent Dybvig",
	booktitle     = "{Proceedings of the 26th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/292540.292559",
	editor        = "Andrew W. Appel and Alex Aiken",
	isbn          = "1-58113-095-3",
	pages         = "203--215",
	publisher     = "{ACM}",
	title         = "{Extending the Scope of Syntactic Abstraction}",
	year          = 1999,
}