Walid Saad Zhu Han Mérouane Debbah Are Hjørungnes Network Formation Games for Distributed Uplink Tree Construction in IEEE 802.16J Networks. 5165-5169 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.987 conf/globecom/2008 db/conf/globecom/globecom2008.html#SaadHDH08