All 2014 2013 2012 2010 Other
All Journal Article Presentation
Proc. Japan Acad. Ser. A Math. Sci.
Volume: 90巻 Pages: 27-32
10.3792/pjaa.90.27
40019983593
Tokyo J. Math.
Volume: 35巻 Pages: 213-239
10.3836/tjm/1342701351