The Height of a Class in the Cohomology Ring of Polygon Spaces. - Yasuhiko Kamiyama; Kazufumi Kimoto (Int. J. Math. Math. Sci., 2013)

On the Level Set of a Function with Degenerate Minimum Point. - Yasuhiko Kamiyama (Int. J. Math. Math. Sci., 2015)

The Configuration Space of Regular Spherical Even Polygons. - Yasuhiko Kamiyama (Int. J. Math. Math. Sci., 2019)