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1986 Casson's invariant for homology $3$-spheres and the mapping class group
Shigeyuki Morita
Proc. Japan Acad. Ser. A Math. Sci. 62(10): 402-405 (1986). DOI: 10.3792/pjaa.62.402
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Vol.62 • No. 10 • 1986
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