Youngwook Kim Saewoong Bahk Enhancing Security Using the Discarded Security Information in Mobile WiMAX Networks. 2046-2050 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.394 conf/globecom/2008 db/conf/globecom/globecom2008.html#KimB08