Domenico Beneventano Sonia Bergamaschi Francesco Guerra Maurizio Vincini The SEWASIE Network of Mediator Agents for Semantic Search. 1936-1969 2007 13 J. UCS 12 http://www.jucs.org/jucs_13_12/the_sewasie_network_of db/journals/jucs/jucs13.html#BeneventanoBGV07