1. K. Kuroda, D. Sillou and F. Takeutchi, French Patent no. 7836148, applied by ANVAR-France (Dec. 22, 1978), US patent no. 4339684 (July 13, 1982).
2. New type of position sensitive photomultiplier
3. Proc. INS Int. Symp. on Radiation Detectors;Kuroda,1982
4. Newly Developed Photomultiplier Tubes with Position Sensitivity Capability
5. H. Constans, private communication.