import_references.TXT

https://en.wikipedia.org/wiki/Copac
http://copac.ac.uk/developers/webapi/
http://copac.ac.uk/developers/openurl/
http://copac.ac.uk/search?isn=9783527403103&format=XML+-+MODS


https://en.wikipedia.org/wiki/OpenURL


http://ocoins.info/
http://ocoins.info/cobg.html
http://ocoins.info/cobgbook.html



DOI Book:
http://onlinelibrary.wiley.com/doi/10.1002/3527600809.fmatter_indsub/summary


http://www.loc.gov/standards/sru/index.html
http://www.loc.gov/standards/sru/resources/lcServers.html



https://en.wikipedia.org/wiki/Open_Archives_Initiative_Protocol_for_Metadata_Harvesting
http://www.openarchives.org/Register/BrowseSites
http://gita.grainger.uiuc.edu/registry/Info.asp