@ARTICLE\{IMM1971-02687,
    author       = "H. Begtrup and S. Leroy and P. Thyregod and P. Wall{\"{o}}e-Hansen",
    title        = "Average of Normals used as control of accuracy, and a comparison with other controls",
    year         = "1971",
    pages        = "247-253",
    journal      = "Scand. J. Clin.Lab.Inves",
    volume       = "27",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2687-full.html"
}