WO9905727-A1  AFANASIEV S ET AL: "MRS SILICON AVALANCHE DETECTORS WITH NEGATIVE FEEDBACK FOR TIME-OF-FLIGHT SYSTEMS" NUCLEAR PHYSICS B. PROCEEDINGS SUPPLEMENT, vol. 44, November 1995, pages 402-405, XP000602442;  AKINDINOV A V ET AL: "New results on MRS APDs" NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A: ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, vol. 387, no. 1, 1 March 1997, page 231-234 XP004058954;  ANTICH P P ET AL: "Avalanche photo diode with local negative feedback sensitive to UV, blue and green light" NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION A (ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT), 21 APRIL 1997, ELSEVIER, NETHERLANDS, vol. 389, no. 3, pages 491-498, XP002080636 ISSN 0168-9002;  FARRELL R ET AL: "HIGH RESOLUTION, LOW ENERGY AVALANCHE PHOTODIODE X-RAY DETECTORS" IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 38, no. 2, 1 April 1991, pages 144-147, XP000229586;  LECOMTE R ET AL: "STATUS OF BGO-AVALANCHE PHOTODIODE DETECTORS FOR SPECTROSCOPIC AND TIMING MEASUREMENTS" NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A: ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, vol. A278, no. 2, 1 June 1989, pages 585-597, XP000253605US5880490-A  Afanasiev et al., "MRS Silicon Avalanche Detectors with Negative Feedback for Time-of-Flight Systems," Proceedings of the 4th International Conference on Advanced Technology and Particle Physics, Como, Italy, Oct. 3-7, 1994, published in Nuclear Physics B (Proc. Suppl.) 44, pp. 402-405 (1995).;  Antich et al., "Avalanche Photo Diode with Local Negative Feedback Sensitive to UV, Blue and Green Light," Nuclear Instruments & Methods in Physics Research, Section A 389, pp. 491-498(1997).;  Bisello et al., "Electrical Characteristics of Metal-Resistive Layer-Silicon (MRS) Avalanche Detectors, " Proceedings of the 4th International Conference on Advanced Technology and Particle Physics, Como, Italy, Oct. 3-7, 1994, published in Nuclear Physics B (Proc. Suppl.) 44, pp. 397-401 (1995).;  Bisello et al., "Metal-Resistive Layer-Silicon (MRS) Avalanche Detectors with Negative Feedback," Proceedings of Wire Chamber Conference, Feb. 1995, published in Nuclear Instruments and Methods in Physics Research A 360, pp.83-86 (1995).;  Bisello et al., "Silicon Avalanche Detectors with Negative Feedback as Detectors for High Energy Physics," Proceedings of Wire Chamber Conference, Feb. 1995, published in Nuclear Instruments and Methods in Physics Research A 367, pp. 212-214 (1995).;  Kulkarni et al., "New Approaches in Medical Imaging Using Plastic Scintillating Detector," Nuclear Instruments and Methods in Physics Research B79, pp. 921-925 (1993).;  Locker et al., "A New Ionizing Radiation Detection Concept Which Employs Semiconductor Avalanche Amplification and the Tunnel Diode Element," Applied Physics Letters, vol. 9, No. 6, pp. 227-230 (1996).;  Sadygov et al., "The Investigation of Possibility to Create the Multichannel Photodetector Based on the Avalanche MRS-Structure," Proceedings of the SPIE-The International Society for Optical Engineering, Zvenigorod, USSR, Apr. 2-6, 1991, published in SPIE vol. 1621, Optical Memory and Neural Networks, pp. 158-168(1991).;  Shushakov et al., "New Solid State Photomultiplier," Report at Optoelectronic Integrated Circuit Materials, Physics and Devices Conference (part of Photonics West 95 Symposium, Feb. 11, 1995, SPIE vol. 2397, pp. 544-554 (1995).;  U.S. Patent Application Ser. No. 08771,207, entitled "Wide Wavelength Range High Efficiency Avalache Light Detector with Negative Feedback," by Peter P. Antich and Edward N. Tsyganov, filed Dec. 20,1996.