@inproceedings{icrisat4634,
       booktitle = {Sustainable agriculture : issues, perspectives and prospects in semi arid tropics : proceedings of the international symposium on natural resources management for a sustainable agriculture},
            year = {1990},
           title = {Natural Resources Management For Sustainable Agriculture In The Sudano-Sahelian Zone},
           pages = {129--162},
          author = {M V K Sivakumar and C Renard and M C Klaij and B R Ntare and L K Fussel and A Bationo},
             url = {http://oar.icrisat.org/4634/}
}