Characteristics of public data networks
www.socialcapital.strath.ac.uk/catalog310.html
www.datenschutz-berlin.de/sonstige/konferen/103_12.html
www.best.com/~szabo/formalize.html
www.dettberner.com/upd41_toc.htm
www.mda.org.uk/nmdc
www.home.vicnet.net.au/~upnet