1. Takashi U. Ito, Wataru Higemoto, and Koichiro Shimomura:
   "Negatively Charged Muonium and Related Centers in Solids"
   J. Phys. Soc. Jpn. 89, 051007 (2020). [arXiv:2206.11478] [Review Article]
   


2. Hiroki Yamauchi, Dita Puspita Sari, Isao Watanabe, Yukio Yasui, Lieh-Jeng Chang, Keietsu Kondo, Takashi U. Ito, Motoyuki Ishikado, Masato Hagihara, Matthias D. Frontzek, Songxue Chi, Jaime A. Fernandez-Baca, James S. Lord, Adam Berlie, Atsuhiro Kotani, Shigeo Mori, Shin-ichi Shamoto:
   "High-temperature short-range order in Mn3RhSi"
   Communications Materials 1, 43 (2020).
   


3. N. Nakamura, R. Higashinaka, K. Fushiya, R. Tsubota, T. U. Ito, W. Higemoto, A. Nakao, R. Kiyanagi, T. Ohhara, K. Kaneko, T. D. Matsuda, and Y. Aoki:
   "μSR and Neutron Scattering Studies on Possible Partially-Disordered Magnetic State Coexisting with Heavy Quasiparticles in SmPt₂Si₂"
   JPS Conf. Proc. 29, 012009 (2020).