参考文献

Haraguchi, Kazuhiro; Itoh, Yoshiharu; Takeda, Shingo; Honma, Yosuke; Tanaka, Hiromichi; Nitanda, Takao; Baba, Masanori; Dutschman, Ginger E.; Cheng, Yung-Chi Nucleosides, Nucleotides and Nucleic Acids, 2004 , vol. 23, # 4 p. 647 - 654