Shrivastava, Saurabh, K. V. Lakshmy, and Chungath Srinivasan. “On the Statistical Analysis of ZUC, Espresso and Grain V1”. International Journal of Computing 20, no. 3 (September 30, 2021): 384-390. Accessed May 1, 2024. https://www.computingonline.net/computing/article/view/2284.