Lee Giles pointed out in a comment that CiteSeer's metadata is now freely available either to download (as a 340MB file), or to access via the OAI (Open Archives Initiative) interface.
There's also supposed to be a SOAP API.
Lee Giles pointed out in a comment that CiteSeer's metadata is now freely available either to download (as a 340MB file), or to access via the OAI (Open Archives Initiative) interface.
There's also supposed to be a SOAP API.