Panagiotis Demestichas Kostas Tsagkaris George Athanasiou Yiouli Kritikou Green footprint of Cognitive Management Technologies for Future Networks. 645-649 2011 MIPRO http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5967132 conf/mipro/2011 db/conf/mipro/mipro2011.html#DemestichasTAK11