@ARTICLE\{IMM1989-01775,
    author       = "J. Steensgaard-Madsen",
    title        = "Typed Representation of Objects by Functions",
    year         = "1989",
    month        = "jan",
    keywords     = "design; languages; theory",
    pages        = "67-89",
    journal      = "{ACM} Transactions on Programming Languages and Systems",
    volume       = "11",
    editor       = "",
    number       = "1",
    publisher    = "",
    url          = "http://www.acm.org/pubs/toc/Abstracts/0164-0925/77345-full.html",
    isbn_issn    = "0164-0925"
}