But is there some place where I could find a unique identifier, or better a URL, or best a URI providing RDF/XML for Linnaeus 1753 (the author and publication for the name) and for Radford et al.1968 (the author and publication that expresses the usage I'm intending).
Our data here at biodiversity.org.au does exactly this (I can't speak for GNI <g>). If you go to the webpage
http://biodiversity.org.au/name/Andropogon%20virginicus.html
You'll see that the name has three taxonomic events - the protonym, sensu Vickery (1961), and sensu Cross & Vickery (1950).
The name itself has (equivalent) ids http://biodiversity.org.au/apni.name/36530 urn:lsid:biodiversity.org.au:apni.name:36530
each taxon/concept/usage also has its own id. The 1961 usage, for instance, is http://biodiversity.org.au/apni.taxon/118883 urn:lsid:biodiversity.org.au:apni.taxon:118883
We do not have a reference by Radford for this name, but that's a data issue.
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