Wang, L.-Q., D.-F. Wang, X.-M. Li, J. Li, and Y. Guan. “Salvianolic Acid-A Induces Apoptosis, Mitochondrial Membrane Potential Loss and DNA Damage in Small Cell Lung Cancer Cell Lines”. Tropical Journal of Pharmaceutical Research, vol. 14, no. 8, Sept. 2015, pp. 1399-04, doi:10.4314/tjpr.v14i8.11.