@CONFERENCE\{IMM1989-01602,
    author       = "H. Riis Nielson and F. Nielson",
    title        = "Transformations on Higher-order Functions",
    year         = "1989",
    pages        = "129-143",
    booktitle    = "Proc. {FPCA'}89",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "{ACM} Press",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1602-full.html"
}