linking from HTML document to RDF (meta)data

Has SWBPD expressed an opinion on best practice for linking from an HTML 
document to an RDF document that describes it and/or attempts to provide 
equivalent content?  (This seems like it ought to be a FAQ, and I must 
be missing something obvious;  I've looked on the SWBPD page;   have I 
not found the right reference?)

"Expressing Simple Dublin Core in RDF/XML" 
<http://dublincore.org/documents/dcmes-xml/> suggests using <link 
rel="meta" href="mydoc.dcxml" />, where mydoc.dcxml is the RDF/XML 
document.  But what I frequently see is a plain old link, e.g., in this 
case something like <a href="/mydoc.dcxml" >RDF</a> (or an equivalent 
button, as used at the bottom of the RDF specs).  It seems as if some 
recommendations along these lines would be helpful.

--Frank