@ARTICLE\{IMM1994-03721, author = "V. V. Vidal", title = "A simple convex optimization problem with many applications", year = "1994", keywords = "optimization, convex problem, applications", pages = "15-23", journal = "{IMA} Journal of Mathematics Applied in Business and Industry", volume = "5", editor = "", number = "", publisher = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/3721-full.html" }