Cheng-Hsiu Tsai; Otsuka, H.; Fang, J.N., 2024. Rediscovery of type specimens of Nesorhinus hayasakai (Mammalia, Rhinocerotidae) from the Pleistocene of Taiwan. Mammal Study (Japan) 49: 1-5 - DOI: 10.3106/ms2023-0070
Otsuka, H.; Chao Chi Lin, 1984. Fossil rhinoceros from the T'ouk'oushou group in Taiwan. Journal of the Taiwan Museum 37 (1): 1-35, pls. 1-6, figs. 1-14
Otsuka, H., 1984. Stratigraphic position of the Chochen vertebrate fauna of the T'ouk'oushan group in the environs of the Chochen district, southwest Taiwan, with special reference to its geologic age. Journal of the Taiwan Museum 37 (1): 37-55