1. R. Dennard, US Patent 3’387’286 (n.d.).
2. A floating-gate and its application to memory devices;Kahng;Bell Syst. Tech. J.,1967
3. F. Masuoka, H. Iizuka, US Patent 4’531’203 (n.d.).
4. A new flash E2PROM cell using triple polysilicon technology;Masuoka,1984
5. VLSI Memory Chip Design;Itoh,2001