Marc Rennhard Sandro Rafaeli Laurent Mathy Bernhard Plattner David Hutchison Towards Pseudonymous e-Commerce. 83-111 2004 4 Electronic Commerce Research 1-2 http://dx.doi.org/10.1023/B:ELEC.0000009283.82564.25 db/journals/ecr/ecr4.html#RennhardRMPH04