Arai, K., Konishi, K. and Sakai, H., 1991, Sedimentary cyclicities and their implications of Junicho Formation (late Pliocene-early Pleistocene), Central Honshu, Japan. Sci. Rep. Kanazawa Univ., 36, 49-82.
Cande, S.C and Kent, D.V., 1992, A new geomagnetic polarity time scale for the late Cretaceous and Cenozoic. Jour. Geophys. Res., 97, 13917-13951.