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2. A splitting theorem for manifolds and surgery groups;Cappell, Sylvain;Bull. Amer. Math. Soc.,1971
3. Mayer-Vietoris sequences in hermitian 𝐾-theory;Cappell, Sylvain E.,1973
4. A splitting theorem for manifolds;Cappell, Sylvain E.;Invent. Math.,1976
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