?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Martins%2C+F&rft.aufirst=F&rft.aulast=Martins&rft.atitle=Surface+abundances+of+ON+stars&rft.volume=578&rft.date=1+June+2015&rft.title=Astronomy+%26+Astrophysics&rft.issn=1432-0746&rft.issue=A10&rft.genre=article