1. Alkaloids of Arnebia decumbens;El-Dahmy;Al-Azhar J Pharm Sci,1995
2. Analysis of naphthaquinone pigments in some Chinese medicinal ‘Zi Cao’;Fu;Yaoxue Xuebao,1984
3. Toxic pyrrolizidine alkaloids of certain Boraginaceous plants;Gamila;Acta Pharm Suec,1987
4. A general review of resources, chemistry, pharmacology and clinical application of Gromwell;Gao;Zhongcaoyao,1986