IEEE COMMUNICATIONS MAGAZINE, vol. 46, no. 10, page. 154 - 161, 2008-10
IEEE COMMUNICATIONS MAGAZINE, vol. 46, no. 5, page. 172 - 180, 2008-05
ANNALES DES TELECOMMUNICATIONS-ANNALS OF TELECOMMUNICATIONS, vol. 63, no. 3-4, page. 195 - 206, 2008-04
ANNALES DES TELECOMMUNICATIONS-ANNALS OF TELECOMMUNICATIONS, vol. 63, no. 3-4, page. 135 - 136, 2008-04