Abe Yoshihiro. Weakly normal filters and the closed unbounded filter on Pkλ. Proceedings of the American Mathematical Society, vol. 104 (1998), pp. 1226–1234.Abe Yoshihiro. Weakly normal filters and large cardinals. Tsukuba journal of mathematics, vol. 16 (1992), pp. 487–494.Abe Yoshihiro. Weakly normal ideals on Pkλ and the singular cardinal hypothesis. Fundamenta mathematicae, vol. 143 (1993), pp. 97–106.Abe Yoshihiro. Saturation of fundamental ideals on Pkλ. Journal of the Mathematical Society of Japan, vol. 48 (1996), pp. 511–524.Abe Yoshihiro. Strongly normal ideals on Pkλ and the Sup-function. opology and its applications, vol. 74 (1996), pp. 97–107.Abe