?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.fishres.2006.11.035&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=R%C3%B6ckmann%2C+C.&rft.aulast=R%C3%B6ckmann&rft.aufirst=C.&rft.issue=1-2&rft.volume=85&rft.date=June+2007&rft.issn=01657836&rft.atitle=Testing+the+implications+of+a+permanent+or+seasonal+marine+reserve+on+the+population+dynamics+of+Eastern+Baltic+cod+under+varying+environmental+conditions&rft.title=Fisheries+Research&rft.pages=1-13&rft.genre=article