Abd-elbary, A., et al. “INCLUSION AND CHARACTERIZATION OF KETOPROFEN INTO DIFFERENT MESOPOROUS SILICA NANOPARTICLES USING THREE LOADING METHODS”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, no. 9, Sept. 2014, pp. 183-91, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/2041.