@misc{EstevezRebelJoseetal.2014,
  author    = {Estevez, Francisco and Rebel, Gregor and Jose, M. and Castillo-Secilla, Jes{\´u}s and Gonz{\´a}les, Peter},
  title     = {Cognitive Radio as solution for Saturation Problem in Wireless Sensor Networks: A survey of Cognitive Radio policies},
  year      = {2014},
  language  = {en}
}