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- Abelianizations of derivation Lie algebras of the free associative algebra and the free Lie algebra. Duke Mathematical Journal 2013. 162:965-1002 .
- Symplectic automorphism groups of nilpotent quotients of fundamental groups of surfaces. Advanced Studies in Pure Mathematics 2008. 2008:- .
- Casson invariant, signature defect of framed manifolds and the secondary characteristic classes of surface bundles. Journal of Differential Geometry 1997. 47:560-599 .
- Abelian quotients of subgroups of the mapping class group of surfaces. Duke Mathematical Journal 1993. 70:699-726 .
- On the structure and the homology of the Torelli group. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1989. 65:147-150 .
- Characteristic Classes of $T^{2}$-bundles. Advanced Studies in Pure Mathematics 1987. 1987:- .
- Casson's invariant for homology $3$-spheres and characteristic classes of surface bundles. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1987. 63:229-232 .
- Casson's invariant for homology $3$-spheres and the mapping class group. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1986. 62:402-405 .
- On the homology groups of the mapping class groups of orientable surfaces with twisted coefficients. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1986. 62:148-151 .
- Discontinuous Invariants of Foliations. Advanced Studies in Pure Mathematics 1985. 1985:- .
- Family of jacobian manifolds and characteristic classes of surface bundles, II. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1985. 61:112-115 .
- Invariant polynomials of the automorphism group of a compact complex manifold. Journal of Differential Geometry 1985. 21:135-142 .
- Nontriviality of the Gelfand-Fuchs characteristic classes for flat $S\sp1$-bundles. Osaka Journal of Mathematics 1984. 21:545-563 .
- Family of Jacobian manifolds and characteristic classes of surface bundles. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1984. 60:373-376 .
- Invariant polynomials on compact complex manifolds. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1984. 60:369-372 .
- Characteristic classes of surface bundles. Bulletin of the American Mathematical Society 1984. 11:386-388 .
- On characteristic classes of Kähler foliations. Osaka Journal of Mathematics 1979. 16:539-550 .
- On characteristic classes of Riemannian foliations. Osaka Journal of Mathematics 1979. 16:161-172 .
- $L$-equivalence classes of submanifolds in complex projective spaces. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1979. 55:31-35 .
- Cartan connection and characteristic classes of foliations. Proceedings of the Japan Academy, Series A, Mathematical Sciences 1977. 53:211-214 .