ATASOY, Beste Melek, et al. “Concomitant Chemoradiotherapy With Low-Dose Weekly Gemcitabine for Nonmetastatic Unresectable Pancreatic Cancer”. Turkish Journal of Gastroenterology, vol. 22, no. 1, Jan. 2011, pp. 60-64, doi:10.4318/tjg.2011.0158.