Exploiting multiresolution models to accelerate ray tracing. - Evaggelia-Aggeliki Karabassi; Georgios Papaioannou 001; Charalampos Fretzagias; Theoharis Theoharis (Comput. Graph., 2003)

Cooperative Location-Sensing for Wireless Networks. - Charalampos Fretzagias; Maria Papadopouli (PerCom, 2004)