1. Central Research Laboratory, Hamamatsu Photonics K.K.; 5000 Hirakuchi, Hamakita-ku Hamamatsu 434-8601 Japan
2. Solid State Division; Hamamatsu Photonics K.K.; 1126-1 Ichino-cho Higashi-ku Hamamatsu 434-8558 Japan
3. Hamamatsu Corporation; 360 Foothill Road, Bridgewater NJ 08807 USA