Schmitz, L, T Maisch, M Fouget, B Novak, A K Hoeh, T Dirschka, and H Lubbert. “Characterization of BF-200 ALA: A Nanoemulsion-Based Drug Delivery System for ALA-PDT”. SKIN The Journal of Cutaneous Medicine 1, no. 3.1 (October 27, 2017): s113. Accessed November 25, 2020. https://jofskin.org/index.php/skin/article/view/105.