@MISC\{IMM2012-06120,
    author       = "F. {\AA}. Nielsen",
    title        = "Python programming -- plotting",
    year         = "2012",
    month        = "sep",
    keywords     = "Python, matplotlib, {PIL,} {VTK,} NetworkX, Mapnik",
    publisher    = "Informatics and Mathematical Modelling, Technical University of Denmark",
    address      = "Richard Petersens Plads, Building 321, {DK-}2800 Kgs. Lyngby",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/6120-full.html"
}