?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Rebafka%2C+F+P&rft.aufirst=F+P&rft.aulast=Rebafka&rft.issn=0378-4290&rft.pages=113-124&rft.atitle=Short-+and+long-term+effects+of+crop+residues+and+of+phosphorus+fertilization+on+pearl+millet+yield+on+an+acid+sandy+soil+in+Niger%2C+West+Africa&rft.volume=36&rft.issue=2&rft.title=Field+Crops+Research&rft.date=1994&rft.genre=article