?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Patnaik%2C+Pratap+R&rft.aulast=Patnaik&rft.aufirst=Pratap+R&rft.issue=4&rft.volume=20&rft.date=April+2002&rft.issn=0167-7799&rft.atitle=Can+imperfections+help+to+improve+bioreactor+performance%3F&rft.title=Trends+in+biotechnology&rft.pages=135-7&rft.genre=article