1. Stability and change in development,1992
2. Self-organizing criticality;Bak;Scientific American,1991
3. The new functionalism and Piaget’s program;Beilin,1983
4. Functionalist and structuralist research programs in developmental psychology: Incommensurability or synthesis?;Beilin,1984
5. Piaget’s new theory;Beilin,1992