T. Sunada.Geometry and analysis on mainfolds : proceedings of the 21st interinational Taniguchi symposium held at Katata, Japan, Aug. 23-29 and the conference held at Kyoto, Aug. 31-Sep. 2, 1987.Springer-Verlag,1988.
Geometry and analysis on mainfolds : proceedings of the 21st interinational Taniguchi symposium held at Katata, Japan, Aug. 23-29 and the conference held at Kyoto, Aug. 31-Sep. 2, 1987