参考文献

Ortiz-Marciales, Margarita; Tirado, Liz M.; Colon, Roberto; Ufret, Maria L.; Figueroa, Ruth; Lebron, Marisabel; DeJesus, Melvin; Martinez, Johanna; Malave, Tania Synthetic Communications, 1998 , vol. 28, # 21 p. 4067 - 4075