Ampofo-Boateng (1993), UK

Bouck (1992), UK

Cross (1988), Australia

Downing (1981), UK

Limbourg (1981), Germany

Luria (2000), USA

Matson (1980), USA

Miller (1982), USA

Nishioka (1991), Japan

Renaud (1989), Canada

Singh (1979), UK

Thomson (1992), UK

Thomson (1997), UK

Thomson (1998), UK