@TECHREPORT\{IMM1990-01089,
    author       = "E. Gislason and M. Johansen and K. Conradsen and B. K. Ersb{\o}ll and S. K. Jackobsen",
    title        = "On the Design of Two-dimensional Zero Phase {FIR} Digital Filters",
    year         = "1990",
    pages        = "31",
    number       = "",
    series       = "",
    institution  = "{IMSOR,} {DTU}",
    address      = "Kgs. Lyngby, Denmark",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1089-full.html"
}