Gildenblat, G.S., Gelmont, B, Milkovic, M, Elshabini-Riad, A, Stephenson, FW Bhutta. LA. Look. D. C "Semiconductors The electrical Engineering Handbook Ed. Richard C. dorf Boca Raton CRC Press llc. 2000Gildenblat, G.S., Gelmont, B., Milkovic, M., Elshabini-Riad, A., Stephenson, F.W., Bhutta, I.A., Look, D.C. “Semiconductors” The Electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton: CRC Press LLC, 2000