Dong-Seup Lee, Hong-Seon Yang, Kwon-Chil Kang, Joung-Eob Lee, Jung Han Lee, Sang Hyuk Park, Jong Duk Lee, Hyungcheol Shin, and Byung-Gook Park, “Oscillation Period Reduction Scheme in SET Circuit Applications”, The 16th Korean Conference on Semiconductors, Deajeon, Korea, pp. 28-29, Feb. 18-20, 2009