- Contact round surgery and Lutz twists,
to appear in Internat. J. Math.
- Contact round surgery and symplectic round handlebodies. Internat.
J. Math. 25 (2014), no. 5, 1450050, 25 pp.
- Relative local equivalence of Engel structures. Math. Z.
273 (2013), no. 3-4, 711–733.
- Global stability of special multi-flags. Israel J. Math.
179 (2010), 29–56.
- (with Goo Ishikawa) Classification of phase singularities for
complex scalar waves and their bifurcations. Nonlinearity
20 (2007), no. 8, 1907–1925.
- Integral curves for contact and Engel structures. Real and
complex singularities, 1–32, World Sci. Publ., Hackensack,
NJ, 2007.
- Classification of horizontal loops in the standard Engel
space. Int. Math. Res. Not. IMRN 2007, no. 3, Art. ID
rnm008, 29 pp.
- Germs of Engel structures along 3-manifolds. Hokkaido
Math. J. 33 (2004), no. 3, 511–523.
- Global stability of distributions of higher corank of derived
length one. Int. Math. Res. Not. 2003, no. 49,
2621–2638.
- Extension of tight contact structures from tori to solid tori.
J. Math. Sci. Univ. Tokyo 9 (2002), no. 3, 521–543.
- Engel structures with trivial characteristic foliations. Algebr.
Geom. Topol. 2 (2002), 239–255 (electronic).
- Rigid paths of generic 2-distributions with degenerate points
on 3-manifolds. Colloq. Math. 92 (2002), no. 2, 161–178.
- Generic knots in contact 3-manifolds. Internat. J. Math.
12 (2001), no. 6, 625–636.
- Liouville setup and contact cobordism. Hokkaido Math. J.
25 (1996), no. 3, 637–650.
Preprints (some of )
- Plastikstufe with toric core (arXiv).
- Generalizations of twists of contact structures to
higher-dimensions via round surgery (arXiv).
- Round surgery and contact structures on 3-manifolds (arXiv).