An extended doubly-adaptive quadrature method based on the combination of the Ninomiya and the FLR schemes. - Takemitsu Hasegawa; Susumu Hibino; Yohsuke Hosoda; Ichizo Ninomiya (Numer. Algorithms, 2007)

A system on the Web for octuple-precision computation. - Takemitsu Hasegawa; Yohsuke Hosoda; Yuuichi Itaya; Ichizo Ninomiya (SMC, 2009)

Numerical evaluation of Goursat's infinite integral. - Yasuyo Hatano; Ichizo Ninomiya; Hiroshi Sugiura; Takemitsu Hasegawa (Numer. Algorithms, 2009)