Kingsley,
Encouraging attribution by URI is a bad idea because it encourages people or
organizations to create URIs where perfectly good ones exist, solely so that
they can get their "attribution". Were this no cost, I wouldn't mind. But
having more than one URI for a resource causes real trouble for data
integration.
Incidentally, there is a legal difference between attribution and citation.
Virtually all of academic credit is based on citation, not attribution.
Attribution is the kind of thing one gives as the result of a license
requirement in exchange for permission to copy. In the academic world
for journal articles this doesn't come into play at all, since there
is no copying (in the usual case). Instead people cite articles
because the norms of their community demand it.
-Alan