Kodaira, S; T. Iwasaki; T. Urabe; T. Kanazawa; F. Egloff; J. Makris; H. Shimamura (15 October 1996). "Crustal structure across the middle Ryukyu trench obtained from ocean bottom seismographic data". Tectonophysics. 263 (1–4): 39–60. Bibcode:1996Tectp.263...39K. doi:10.1016/S0040-1951(96)00025-X.
encyclopedia.com
Allaby, Alissa; Michael Allaby (1999). "Ryukyu Trench". Encyclopedia.com. Retrieved 3 March 2012.
Kodaira, S; T. Iwasaki; T. Urabe; T. Kanazawa; F. Egloff; J. Makris; H. Shimamura (15 October 1996). "Crustal structure across the middle Ryukyu trench obtained from ocean bottom seismographic data". Tectonophysics. 263 (1–4): 39–60. Bibcode:1996Tectp.263...39K. doi:10.1016/S0040-1951(96)00025-X.