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Endo, H., H. Sasaki, Y. Hayashi, E. A. Petrov, M. Amano and N. Miyazaki. 1999. CT Examination of the head of Baikal seal (Phoca sibirica). J. Anat. 194（1）: 119-126.

Endo, H., K. Watanabe, Y. Hayashi, M. Matsuzaki, T. Sakai, T. Itou, H. Koie, J. Kimura and B. J. Stafford. 2003. Three-dimensional CT image analysis of the digging system in the aardvark Ann. Anat. 185(4): 367-372.

Endo, H. and Tsuchiya, K. 2006. A new species of Ryukyu spiny rat, Tokudaia (Muridae: Rodentia), from Tokunoshima Island, Kagoshima Prefecture, Japan. Mammal Study 31(1): 47-57.

Endo, H., Niizawa, N., Komiya, T., Kawada, S., Kimura, J., Itou, T., Koie, H. and Sakai, T. 2007. Three-dimensional CT examinations of the mastication system in the giant anteater. Zool. Sci. 24(10): 1005-1011.