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♦ ¹Diets of the demersal fishes on the shelf off Iwate, northern Japan, T. Fujita, D. Kitagawa, Y. Okuyama, Y. Ishito, T. Inada, Y. Jin, Marine Biology (1995) 123:219-233
♦ ²Seasonal dynamics of a coastal food web: Stable isotope analysis of a higher consumer, Hideki Hamaoka, Noboru Okuda, Toru Fukumoto, Hitoshi Miyasaka, and Koji Omori, "Earth, Life, and Isotopes", Chap. 11, p. 161-181, Kyoto University Press (2010)