Qin, Lingyue, Xiaoyang Dong, Xiaoyun Wang, Keting Jia, and Yunwen Liu. “Automated Search Oriented to Key Recovery on Ciphers With Linear Key Schedule: Applications to Boomerangs in SKINNY and ForkSkinny”. IACR Transactions on Symmetric Cryptology 2021, no. 2 (June 11, 2021): 249–291. Accessed September 17, 2021. https://tosc.iacr.org/index.php/ToSC/article/view/8911.