Byung Yong Choi, Choong-Ho Lee, Yong Kyu Lee, Hyungcheol Shin, Jong Duk Lee, Byung-Gook Park, Dong-Won Kim, Suk-Kang Sung, Se Hoon Lee, Byung-Kyu Cho, Tae-Yong Kim, Eun Suk Cho, Jong Jin Lee, and Donggun Park, “Investigation of Lateral Charge Distribution of 2-bit SONOS Memory Devices Using Physically Separated Twin SONOS Structure,” ICMTS2006, Texas, U.S.A., pp. 47-50, March 6-9, 2006