Linsangan, Noel B., Kenji J. Yabashi, Ramon G. Garcia, Arnold C. Paglinawan, Marloun P. Sejera, Charmaine C. Paglinawan, and Zaliman Sauli. 2018. “Implementation of a 4-Bit Ripple Carry Full Adder of Mirror Design Style Using Synopsys Generic 90nm Technology on a Full-Custom and Semi-Custom Design”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 10 (1-14):31-34. https://jtec.utem.edu.my/jtec/article/view/3987.