1. Active-passive transformation and operational reversibility;Beilin,1969
2. The cognition basis for linguistic structures;Bever,1970
3. On the acquistion of syntax: A critique of “contextual generalizations”;Bever;Psychological Review,1965
4. La phrase dans le langage de l'enfant;Bloch;Journal de psychologie normale et pathologique,1924
5. Form and function in emerging grammars;Bloom,1970