2 citations to https://www.mathnet.ru/eng/mmj459

1. D. B. Kaledin, “Witt vectors, commutative and non-commutative”, Russian Math. Surveys, 73:1 (2018), 1–30                
2. Ramachandran N., “Zeta Functions, Grothendieck Groups, and the Witt Ring”, Bull. Sci. Math., 139:6 (2015), 599–627