2009 IEEE International Symposium on Circuits and Systems (ISCAS) Circuits and Systems (ISCAS), 2009 IEEE International Symposium on. :1775-1778 May, 2009
2007 IEEE International Symposium on Circuits and Systems (ISCAS) Circuits and Systems (ISCAS), 2007 IEEE International Symposium on. :3014-3017 May, 2007