@ARTICLE\{IMM1981-01773,
    author       = "J. Steensgaard-Madsen",
    title        = "A Statement-Oriented Approach to Data Abstraction",
    year         = "1981",
    month        = "jan",
    pages        = "1-10",
    journal      = "{ACM} Transactions on Programming Languages and Systems",
    volume       = "3",
    editor       = "",
    number       = "1",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1773-full.html",
    isbn_issn    = "0164-0925"
}