Tsuruga, Keiichiro, Masanori Nagao, and Yasushi Mori. "Study of Agano ware : Results of archaeological observation and X-ray fluorescence analysis." Bulletin of Kitakyushu Museum of Natural History and Human History 5 (2008).

Tsuruga, Keiichiro, Masanori Nagao, and Yasushi Mori. "Study of Agano ware : Results of archaeological observation and X-ray fluorescence analysis." Bulletin of Kitakyushu Museum of Natural History and Human History 5 (2008).