Maha Fadel, Ghada Abdelbary, Shahira F. Elmenshawe, and Essam Eissa. “Toluidine Blue Loaded Transferosomes for Topical Photodynamic Therapy: For-Mulation and Characterization”. International Journal of Research in Pharmaceutical Sciences, Vol. 2, no. 4, Oct. 2011, pp. 537-44, https://pharmascope.org/ijrps/article/view/940.