@conference{EURECOM+2370,
  author = {Haddad, Majed and  Debbah, Merouane and  Menouni Hayar, Aawatif},
  title = {Spectral efficiency for cognitive radio},
  booktitle = {GLOBECOM 2007, 50th annual IEEE Global Telecommunications Conference, November 26-30, 2007, Washington, USA},
  year = {2007},
  editor = {IEEE},
  address = {Washington},
  note = {© 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.},
}