@TECHREPORT\{IMM1980-0361, author = "H. Juel", title = "Solution of location-allocation problems with two new facilities using Euclidean distances", year = "1980", number = "", series = "", institution = "Virginia Polytechnic Institute and State University", address = "", type = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/361-full.html" }