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Akihito, Akishinonomiya Fumihito, Yuji Ikeda, Masahiro Aizawa, Takashi Makino, Yumi Umehara, Yoshiaki Kai, Yuriko Nishimoto, Masami Hasegawa, Tetsuji Nakabo and Takashi Gojobori, Evolution of Pacific Ocean and the Sea of Japan populations of the gobiid species, Pterogobius elapoides and Pterogobius zonoleucus, based on molecular and morphological analyses, Gene 427 (1-2): 7-18 (2008).