1. Photomultiplier Radiation Detector;Coltman;Phys. Rev.,1947
2. The Secondary Emission Multiplier—A New Electronic Device;Zworykin;Proc. Inst. Radio Engrs.,1936
3. An Electrostatically Focused Multiplier Phototube;Rajchman;Electronics,1940
4. Multiplier Phototube Characteristics: Application to Low Light Levels;Engstrom;J. Optical Soc. Am.,1947