@CONFERENCE\{IMM1985-01586,
    author       = "H. Riis Nielson",
    title        = "A Hoare-like Proof System for Total  Correctness of  Nested Recursive Procedures",
    year         = "1985",
    booktitle    = "Proc. Fourth Hungarian Computer Science Conference",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1586-full.html"
}