?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Reinhard+Feldmann%2C+-&rft.aulast=Reinhard+Feldmann&rft.aufirst=-&rft.date=10+May+2017&rft.title=New+challenges+in+Preservation+and+Conservation&rft.genre=proceeding