C. Hahnvajanawong, V. Bhudisawadi, N. Namwat, B. Sripa, and W. Tassaneeyakul, “Comparative in vitro Cytotoxicity of the Generic and Reference Products of Gemcitabine on Various Cancer Cell Lines”, SRIMEDJ, vol. 26, no. 1, pp. 2–8, Oct. 2013.