参考文献

Shaver, Sammy R.; Pendergast, William; Siddiqi, Suhaib M.; Yerxa, Benjamin R.; Croom, Dallas K.; Dougherty, Robert W.; James, Michael K.; Neil Jones; Rideout, Janet L. Nucleosides and Nucleotides, 1997 , vol. 16, # 7-9 p. 1099 - 1102