?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=P&rft.au=Hiernaux%2C+P&rft.aulast=Hiernaux&rft.atitle=The+influence+of+vegetation+pattern+on+the+productivity%2C+diversity+and+stability+of+vegetation%3A+The+case+of+'brousse+tigree'+in+the+Sahel&rft.title=Acta+Oecologica&rft.issn=1146-609X&rft.date=1999&rft.volume=20&rft.pages=147-158&rft.issue=3&rft.genre=article