@article{10.1109/MDSO.2004.3,
author = {Terry Costlow, },
title = {Digital Postmark Helps Fight Spam, Virus Attacks},
journal = {IEEE Distributed Systems Online},
volume = {5},
number = {},
issn = {1541-4922},
year = {2004},
pages = {4},
doi = {doi.ieeecomputersociety.org/10.1109/MDSO.2004.3},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}