W. Kabaciński, R. Rajewski, and A. Al-Tameemi, “Rearrangeability of 2×2 W-S-W Elastic Switching Fabrics with Two Connection Rates”, JTIT, vol. 71, no. 1, pp. 11–17, Mar. 2018, doi: 10.26636/jtit.2018.123417.