@ARTICLE\{IMM1981-03678,
    author       = "V. V. Vidal",
    title        = "Un metodo grafico para resolver una familia de problemas de optimizacion",
    year         = "1981",
    keywords     = "distribucion de recursos, optimization, metodo grafico",
    pages        = "11-16",
    journal      = "Journal of the International Institute of Energy (Mexico)",
    volume       = "5",
    editor       = "",
    number       = "11",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3678-full.html"
}