@TECHREPORT\{IMM2013-06719,
    author       = "A. A. Nielsen",
    title        = "Interpolation in laser scanned height data",
    year         = "2013",
    month        = "dec",
    pages        = "112",
    number       = "",
    series       = "Technical Report",
    institution  = "Danish Geodata Agency",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/6719-full.html"
}