Zou, X.-P., M. Chen, X.-Q. Zhang, B. Zhang, J. Cao, and H.-S. Luo. “Expression of Vacuolar H+-ATPases and the Intracellular PH Values in Three Adenocarcinoma Cell Lines of Digestive System”. Cellular and Molecular Biology, vol. 56, no. 3, Mar. 2010, pp. 1268-75, https://www.cellmolbiol.org/index.php/CMB/article/view/973.