Abdulrahman, A., J.-P. Chen, Y.-J. Chen, V. Hwang, M. J. Kannwischer, and B.-Y. Yang. “Multi-Moduli NTTs for Saber on Cortex-M3 and Cortex-M4”. IACR Transactions on Cryptographic Hardware and Embedded Systems, vol. 2022, no. 1, Nov. 2021, pp. 127-51, doi:10.46586/tches.v2022.i1.127-151.