A. Narasimha Reddy, Y. P. “TIMING ERROR AVOIDANCE TECHNIQUE USING TIMING CHECKER FLIP-FLOP UNIT FOR HIGH PERFORMANCE DESIGNS”. International Journal of Advanced Science and Technology, Vol. 29, no. 3s, Mar. 2020, pp. 1687 -92, http://sersc.org/journals/index.php/IJAST/article/view/6228.