@ARTICLE\{IMM1987-01768,
    author       = "H. Riis Nielson",
    title        = "A Hoare-like Proof System for Run-time Analysis of Programs",
    year         = "1987",
    pages        = "107-136",
    journal      = "Science of Computer Programming",
    volume       = "9",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1768-full.html"
}