@Inproceedings {maass2005,
title = {Paid Content - Paid Services: Success Factors for Electronic Sales},
author = {Maass, W. and Stahl, F.},
year = {2005},
owner = {Chair in Information and Service Systems - Saarland University},
timestamp = {2013-06-20T09:22:55+02:00},
url = {http://iss.uni-saarland.de/en/publications},
booktitle = {Digital Content Engineering},
pages = {79-88},
editor = {Reich, S.},
}