Srecko Brlek Sardaouna Hamadou John Mullins Some Remarks on the Certificates Registration of the Electronic Commerce Protocol SET. 119 2006 conf/aict/2006 AICT/ICIW http://doi.ieeecomputersociety.org/10.1109/AICT-ICIW.2006.176 db/conf/aict/aict2006.html#BrlekHM06