Radhakrishnan.P, Themozhi.G, Sree Rathna Lakshmi.N.V.S. “FPGA Implementation of XOR-MUX Full Adder and Subtractor Based Truncated DCT for Audio Processing Applications”. International Journal of Advanced Science and Technology, Vol. 29, no. 06, May 2020, pp. 2352 -67, https://sersc.org/journals/index.php/IJAST/article/view/13535.