1. ENSO and climatic variability in the last 150 years;Allan,2000
2. A framework for examining the impacts of climate variability;Anderson,1991
3. Systems thinking as a perspective for the management of dryland farming;Anderson,1991
4. Assessing the impacts of climate change on winter crop production in Uruguay and Argentina using crop simulation models;Baethgen,1995
5. Improving agriculture through systemic action research;Bawden,1991