参考文献

Ahn, Soon Kil; Choi, Nam Song; Jeong, Byeong Seon; Kim, Kye Kwang; Journ, Duck Jin; Kim, Joon Kyum; Lee, Sang Joon; Kim, Jung Woo; Hong, Chung Il; Jew, Sang-sup Journal of Heterocyclic Chemistry, 2000 , vol. 37, # 5 p. 1141 - 1144