@article{ ungar91organizing,
    author = "David Ungar and Craig Chambers and Bay-Wei Chang and Urs 
Holzle",
    title = "Organizing Programs Without Classes",
    journal = "Lisp and Symbolic Computation",
    volume = "4",
    number = "3",
    pages = "0-",
    year = "1991",
    url = "citeseer.nj.nec.com/ungar91organizing.html" }

@inproceedings{ chambers92objectoriented,
    author = "Craig Chambers",
    title = "Object-oriented multi-methods in Cecil",
    booktitle = "Proceedings of the 6th European Conference on 
Object-Oriented Programming ({ECOOP})",
    volume = "615",
    publisher = "Springer-Verlag",
    address = "Berlin, Heidelberg, New York, Tokyo",
    editor = "Ole Lehrmann Madsen",
    isbn = "3-540-55668-0",
    pages = "33--56",
    year = "1992",
    url = "citeseer.nj.nec.com/174216.html" }

@unpublished{ chambers95cecil,
    author = "Craig Chambers",
    title = "The {Cecil} Language Specification and Rationale: Version 
2.0",
    year = "1995",
    url = "citeseer.nj.nec.com/chambers96cecil.html" }