WASET
Doukeli, A. , Lioumpas, A. , Karagiannidis, G. , Frangos, P. , Mathiopoulos, P.. "Increasing the Efficiency of Rake Receivers for Ultra-Wideband Applications". World Academy of Science, Engineering and Technology, Open Science Index 31, International Journal of Electrical and Computer Engineering, (2009), 3(7), 1490 - 1494.