?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=M%C3%A4kel%C3%A4%2C+A.&rft.aulast=M%C3%A4kel%C3%A4&rft.aufirst=A.&rft.issue=2&rft.volume=59&rft.date=February+1987&rft.issn=03057364&rft.atitle=Comparison+of+Two+Shoot%E2%80%94Root+Partitioning+Models+with+Respect+to+Substrate+Utilization+and+Functional+Balance&rft.title=Annals+of+Botany&rft.pages=129-140&rft.genre=article