Stelvio Cimato Clemente Galdi Raffaella Giordano Barbara Masucci Gildo Tomasco Design and Implementation of an Inline Certified E-mail Service. 186-199 2005 conf/cans/2005 CANS http://dx.doi.org/10.1007/11599371_16 db/conf/cans/cans2005.html#CimatoGGMT05