@article{payaro:JSAC07,
  title = "{Robust power allocation designs for multiuser and multiantenna downlink communication systems through convex optimization}",
  author = "M.~Payar\'o and A.~Pascual-Iserte and M.~A.~Lagunas",
  journal = "{IEEE} Jour. on Selec. Areas in Comm.",
  volume = "25",
  number = "7",
  month = "Sep.",
  pages = "1390 - 1401",
  year = {2007}
}