@CONFERENCE\{IMM1979-02685,
    author       = "S. Vibholm and A. Pedersen and P. Thyregod",
    title        = "The effect of surface roughness on low probability first breakdown in compressed SF6",
    year         = "1979",
    booktitle    = "Proc. 3rd International Symposium on high voltage engineering",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "Milan",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2685-full.html"
}