@ARTICLE\{IMM1994-0694,
    author       = "K. Madsen and H. B. Nielsen and M. C. Pinar",
    title        = "New Characterizations of Solutions to Overdetermined Systems of Linear
Equations",
    year         = "1994",
    pages        = "159-166",
    journal      = "Operations Research Letters",
    volume       = "16",
    editor       = "",
    number       = "3",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/694-full.html"
}