?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M+V+K&rft.au=Sivakumar%2C+M+V+K&rft.aulast=Sivakumar&rft.atitle=Solar+energy+utilization+by+tropical+sorghums.+Part+I.+Seasonal+patterns+and+productivity&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=0168-1923&rft.date=1985&rft.volume=35&rft.pages=47-57&rft.issue=1-4&rft.genre=article