参考文献

Kittaka, Atsushi; Kuze, Tetsuya; Amano, Midori; Tanaka, Hiromichi; Miyasaka, Tadashi; Hirose, Kunihiko; Yoshida, Tadao; Sarai, Akinori; Yasukawa, Takashi; Ishii, Shunsuke Nucleosides and Nucleotides, 1999 , vol. 18, # 11-12 p. 2769 - 2783