参考文献

Ahmad, Hafiz B.; Rama, Nasim H.; Hussain, Mazhar; Hussain, Muhammad T.; Qasim, Malik M.; Hameed, Shahid; Malana, Muhammad A.; Malik, Abdul Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2003 , vol. 42, # 3 p. 611 - 615