Ghorab, Mamdouh, et al. “EFFECT OF VISCOSITY, SURFACTANT TYPE AND CONCENTRATION ON PHYSICOCHEMICAL PROPERTIES OF SOLID LIPID NANOPARTICLES”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 3, Mar. 2015, pp. 145-53, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/4400.