1. Jiangsu New Medical College. The dictionary of chinese herb. The Shanghai Science and Technology Publishing House (China), 1977;vol. 2:2429.
2. Cheol PJ, Sil CS, Suk YH, Hwan KS. Han'guk Yongyang Siklyong Hakhoechi (Korean) 1993;22:581-585; Chem Abstr 1994;120:268648f.
3. Cheol PJ, Suk YH, Beob YY, Ho LJ. Yakhak Hoechi (Korean) 1993;37:306; Chem Abstr 1994;120:226657c.
4. The neem tree;Schmutterer,1995
5. Two Novel Azadirachtin Derivatives from Azadirachta indica