@ARTICLE\{IMM2003-0285, author = "J. Brimberg and H. Juel and A. Sch{\"{o}}bel", title = "Properties of {3-}dimensional median line location models", year = "2003", pages = "71-85", journal = "Annals of Operations Research", volume = "122", editor = "", number = "", publisher = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/285-full.html" }