1. V. Popov, US patent No: 6,747,263 B1.
2. V. Popov, S. Majewski, A.G. Weisenberger, Readout electronics for multianode photomultiplier tubes with pad matrix anode layout, Thomas Jefferson National Accelerator Facility, IEEE 2003 Medical Imaging Conference Record, November 2003.
3. Saint−Gobain Crystals and Detectors, (Bicron), Hillsborough, NJ.
4. V.Popov, B.L. Welch, PCI data acquisition card for application in radiation imaging systems, Thomas Jefferson National Accelerator Facility, IEEE 2003 Medical Imaging Conference Record, November 2003.
5. Sparrow Corporation, Daytona Beach, FL, http://www.sparrowcorp.com.