1. The Quaternary chronology of the northwestern Kanto district, Japan;Arai;J. Gunma Univ. Nat. Sci.,1962
2. Maker-tephra layers erupted since the Jomon period in the northwestern Kanto district, Japan;Arai;Archeol. J. (Kokogaku J.),1979
3. Bayesian analysis of radiocarbon dates;Bronk Ramsey;Radiocarbon,2009
4. Recent and planned developments of the program OxCal;Bronk Ramsey;Radiocarbon,2013
5. A scientific age-determination of the Shibukawa eruption from Haruna Volcano during the Kofun period, about 1,500 years ago;Hayakawa;Sci. Rep. Fac. Educ. Gunma Univ.,2015