@CONFERENCE\{IMM1997-0504,
    author       = "A. K. Ersb{\o}ll and B. K. Ersb{\o}ll",
    title        = "On spatio-temporal kriging",
    year         = "1997",
    month        = "sep",
    pages        = "617-622",
    booktitle    = "Proceedings of the Third Annual Conference of the International Association for Methematica Geology.",
    volume       = "",
    series       = "",
    editor       = "Vera Pawlowsky Glahn",
    publisher    = "CIMNE",
    organization = "",
    address      = "Barcelona, Spain",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/504-full.html"
}