Panda, Sagar Suman, et al. “Reverse Phase Ultrafast Liquid Chromatography Method for Simultaneous Estimation of Citicoline Sodium and Piracetam in Tablets”. International Journal of Pharmaceutical Sciences and Nanotechnology(IJPSN), vol. 6, no. 1, May 2013, pp. 1952-7, doi:10.37285/ijpsn.2013.6.1.5.