Zhao, Qin; et al. (2011). "In vitro and in vivo anti-tumour activities of echinoside A and ds-echinoside A from Pearsonothuria graeffei". Journal of the Science of Food and Agriculture. 92 (4): 965–974. doi:10.1002/jsfa.4678. PMID22012678.
Zhao, Qin; et al. (2011). "In vitro and in vivo anti-tumour activities of echinoside A and ds-echinoside A from Pearsonothuria graeffei". Journal of the Science of Food and Agriculture. 92 (4): 965–974. doi:10.1002/jsfa.4678. PMID22012678.