@ARTICLE\{IMM1986-03692, author = "V. V. Vidal and P. Becker", title = "On Lagrange multipliers and {QRA-}work", year = "1986", keywords = "optimization, Lagrange multipliers, quality", pages = "1143-1148", journal = "{IEEE} Journal of selected areas in communication", volume = "36", editor = "", number = "", publisher = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/3692-full.html" }