Nussbaum, Louis-Frédéric. (2005). "Ōsumi" in Japan Encyclopedia, p. 762.
Yoshida, Norimasa et al."Systemic Approach to Achieve Fine Pointing Requirement of Solar-B," in Automatic Control in Aerospace 2004 (ed., Alexander Nebylov), p. 101; excerpt, "The satellite is under development by the Institute of Space and Astronautical Science of the Japan Aerospace Exploration Agency (ISAS/JAXA) and the National Astronomical Observatory of Japan (NAOJ)."