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Studies on the rajid fishes (Rajidae) found in the waters around Japan. Journal of the Shimonoseki College of Fisheries, 7(2/3), 193–394
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Fauna Japonica. Rajidae (Pisces). Biogeographical Society of Japan (Tokyo): i–vi, 1–82
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Systematics and distribution of the skates of the north Pacific. In Uyeno, T. & Arai, R. & Taniuchi, T. & Matsuura, K. (Eds) Proceedings of the second international conference on Indo-Pacific fishes. Ichthyological Society of Japan, Tokyo: 269–280
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Interrelationships within a putative monophyletic groups of skates (Chondrichthyes, Rajoidei, Rajini). In Uyeno, T. & Arai, R. & Taniuchi, T. & Matsuura, K. (Eds) Proceedings of the second international conference on Indo-Pacific fishes. Ichthyological Society of Japan, Tokyo: 281–290
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Revision of the western North Pacific species of the genus Raja. Japanese Journal of Ichthyology, 34(3), 241–285
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Fishes of the genus Raja (Rajiformes: Rajidae) from Taiwan. Journal of Taiwan Museum, 42(2), 1–12