Notes on contributors. Introduction. 1. Australia; J. Riley. 2. China; Shi Meixia. 3. France; F. Gaudu. 4. Germany; B. Waas. 5. Japan; R. Yamakawa. 6. Korea; Young Hee Lee. 7. Taiwan; Chih-Poung Liou. 8. The United Kingdom; C. Barnard. 9. United States; S.J. Schwab.