?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=S%C3%B6ding%2C+A&rft.aulast=S%C3%B6ding&rft.aufirst=A&rft.pages=305+-+308&rft.issue=3&rft.atitle=Pick-up+ions+and+associated+wave+energy+transport+at+Comet+P%2FHalley%3A+A+case+study&rft.title=Geophysical+Research+Letters&rft.volume=24&rft.issn=0094-8276&rft.date=1+February+1997&rft.genre=article