title: an anonymous electronic commerce scheme with an off-line authority and untrusted agents 1998. authors: j domingo-ferrer , j herrera-joancomartэ. venue: sigmod record. year: nan
title: an anonymous electronic commerce scheme with an off-line authority and untrusted agents sigmod record , 1998.0. authors: j domingo-ferrer , j herrera-joancomarti. venue: nan. year: nan