Alessandro M. Martellone David Tacconi Vincenzo Del Fatto Giuliana Vitiello L.U.N.A. Ads - Sustaining Wireless Access for Mobile Users. 155-166 2008 VISUAL http://dx.doi.org/10.1007/978-3-540-85891-1_19 conf/visual/2008 db/conf/visual/visual2008.html#MartelloneTFV08