K. Tsukada,, H.Haba, M.Asai, A. Toyoshima, K. Akiyama, Y. Kasamatsu, I. Nishinaka, S. Ichikawa, K. Yasuda, Y.Miyamoto, K.Hashimoto, Y. Nagame, S.Goto, H. Kudo, W. Sato, A. Shinohara, Y.Oura, K. Sueki, H. Kikunaga, N. Kinoshita , A. Yokoyama, M. Schädel, W.Brüchle and J. V. Kratz ; “Adsorption of Db and its homologues Nb and Ta, and the pseudo-homologue Pa on anion-exchange resin in HF solution” Radiochim. Acta 97, 83-89 (2009).

K. Akiyama, H. Haba, K. Tsukada, M. Asai, A. Toyoshima, K. Sueki, Y. Nagame, M. Katada; “A metallofullerene that encapsulates ²²⁵Ac” J. Radioanal. Nucl. Chem. 280, 329-331 (2009)

Hiromitsu Haba, Kazuhiko Akiyama, Kazuaki Tsukada, Masato Asai, Atsushi Toyoshima,Tsuyoshi Yaita, Masaru Hirata, Keisuke Sueki, and Yuichiro Nagame; “Chloride Complexation of Zr and Hf in HCl Investigated by Extended X-ray Absorption Fine Structure Spectroscopy: Toward Characterization of Chloride Complexation of Element 104, Rutherfordium (Rf)” Bull. Chem. Soc. Jpn. Vol. 82, No. 6, 698–703 (2009).

 K. Akiyama, H. Haba, K. Sueki, K. Tsukada, M. Asai, A. Toyoshima, Y. Nagame, M. Katada; “²²⁵Ac Metallofullerene: Toward ²²⁵Ac Nanogenerator in Fullerene” Chem. Lett. 38 (2009) 978-979.