Journal of the Faculty of Science the University of Tokyo. Sec. Mathematics

1992. V. 39 № 1,2,3

1991. V. 38 № 2

1990. V. 37 № 1,2

1986. V. 33 № 1

1985. V. 32 № 1,2

1984. V. 30 № 3

1979. V. 26 № 3

1973. V. 20 № 1,2,3