Siddiq, F., H. Jamal, T. Muhammad, and M. Iqbal. “Area Efficient Radix 4 2 64 Point Pipeline FFT Architecture Using Modified CSD Multiplier”. The Nucleus, vol. 51, no. 3, Aug. 2014, pp. 345-53, http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/689.