Thuy, T. T; Porzel, A.; Franke, K.; Wessjohann, L.; Sung, T. V. (September 2005). "Isoquinolone and protoberberine alkaloids from Stephania rotunda". Die Pharmazie. 60 (9): 701–704. PMID16222872.
unipune.ac.in
ugcdskpdf.unipune.ac.in
[1] Journal of Ethnopharmacology 132 (2010). p. 380