1. Regeneration theory;Nyquist;Bell Syst. Tech. J.,1932
2. Stabilized feedback amplifiers;Black;Trans. AIEE.,1934
3. Negative resistance;Mackay;Amer. J. Phys.,1958
4. Avalanche breakdown in silicon;McKay;Phys. Rev.,1954
5. Ionization rates for holes and electrons in silicon;Miller;Phys. Rev.,1957