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