M. Z. . Zainudin, J. . Ponnian, N. . Mohamed, and . I. . Sulaiman, “ENERGY-EFFICIENT 4-bit FULL ADDER DESIGN USING MODIFIED GDI TECHNIQUE IN 130nm TECHNOLOGY USING MENTOR GRAPHICS SOFTWARE”, IJIRM, vol. 13, no. 1, pp. 9–17, Apr. 2026, doi: 10.63646/.