参考文献

Lee, Herbert C.; Kumar, Piyush; Wiebe, Leonard I.; McDonald, Robert; Mercer, John R.; Ohkura, Kazue; Seki, Koh-Ichi Nucleosides and Nucleotides, 1999, vol. 18, # 9 p. 1995 - 2016 doi: 10.1080/07328319908044860