1. Traditional farming in Latin America;Altieri;The Ecologist,1991
2. Empirical models of farmer behavior using psychological, social and economic variables. Part 1;Austin;Agricultural Systems,1998
3. Composing rural livelihoods: from farming systems to food systems;Bebbington,1994
4. Non-Governmental Organizations and the State in Latin America: Rethinking Roles in Sustainable Agricultural Development;Bebbington,1993
5. ZOPP marries PRA? Yes! But why? — Why is it fruitful and effective to combine ZOPP and PRA?;Bernecker;BeraterInnen News,1999