Geodesic
A transfer morphism for Witt cogroups
Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 17, Tome 356 (2008), pp. 149-158

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Let $A$ be a ring with an involution in which 2 is invertible, $\epsilon$ be 1 or $-1$, $s(\in A)$ be a central regular element such that $s^\ast = s$. We construct a transfer homomorphism $_\epsilon W'_0(A/s)\to{}_\epsilon W'_1(A)$ for Witt cogroups and prove a projection formula. Bibl. – 11 titles. 
@article{ZNSL_2008_356_a4,
     author = {V. I. Kopeiko},
     title = {A transfer morphism for {Witt} cogroups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {149--158},
     publisher = {mathdoc},
     volume = {356},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2008_356_a4/}
}
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V. I. Kopeiko. A transfer morphism for Witt cogroups. Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 17, Tome 356 (2008), pp. 149-158. http://geodesic.mathdoc.fr/item/ZNSL_2008_356_a4/