1. The orchestra. Lives behind the music;Danzinger,1997
2. Guitar technique;Williams,1998
3. Survey of orchestras. Survey by the Federation Internationale des Musiciens;James,2000
4. Promoting a healthy keyboard technique;Brown,2000
5. Grindea C. Heal thy piano technique. Simrock House, 220 The Vale, London, NW11 8HZ: Richard Schauer; 2001.