1. (1) Tsuji, this Journal, 2 (1925).
2. (2) Tsuji, this Journal, 1 (1924).
3. (3) Tsuji, this Journal, 109-113, where lim|xn|≤eK/L is proved for bn=nλ(logn)λ1(log1n)λ2…………
4. (4) Tsuji, this Journal, 131-133.
5. (5) Tsuji, this Journal, Theorems 6 and 7.