MAYSON H. ALKHATIB, et al. “Antitumor Activity of Mixing Gemcitabine With Pravastatin in a Microemulsion Against a549 Non-Small Cell Lung Cancer Cells”. International Journal of Pharma and Bio Sciences, vol. 8, no. 2, June 2017, pp. 41-47, doi:10.22376/ijpbs.2017.8.2.p41-47.