Fabrizio Davide Pierpaolo Loreti Massimiliano Lunghi Giuseppe Riva Francesco Vatalaro Communications through Virtual Technologies. 124-154 2002 conf/networking/2002t NETWORKING Tutorials http://link.springer.de/link/service/series/0558/bibs/2497/24970124.htm db/conf/networking/networking2002t.html#DavideLLRV02