I thought this announcement might be of interest:
http://datacite.org/node/63
"A new DataCite Content Resolver
…
The biggest changes in this release are:
- Extra user defined URLs per DOI,
- addition of citation formatting metadata based on Citation Style
Language (http://citationstyles.org)."
See e.g. http://data.datacite.org/10.5524/100005
Rintze