References
- Barkley R. Attention-deficit hyperactivity disorder: A handbook for diagnosis and treatment 2nd edn. Guilford, New York 1998; 628
- Sandberg S. Hyperactivity disorders of childhood, S Sandberg. Cambridge University Press, Cambridge 1996
- Luk S L. Cross-cultural aspects. Hyperactivity disorders of childhood, S Sandberg. Cambridge University Press, Cambridge 1996; 350–381