@TECHREPORT\{IMM1977-03795,
    author       = "V. V. Vidal and E. Silver",
    title        = "Heuristics: a state of art",
    year         = "1977",
    pages        = "8",
    number       = "",
    series       = "",
    institution  = "",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3795-full.html"
}