@inproceedings{icrisat4559,
       booktitle = {International Symposium on Applied Soil Physics in Stress Environments},
            year = {1990},
           title = {Managing Soil Structure Under Rainfed Conditions},
           pages = {167--193},
          author = {G D Smith and K B Laryea and K J Coughlan},
             url = {http://oar.icrisat.org/4559/}
}