Martin, Pierre, Markus Müller, Dietmar Flubacher, Andreas Boudier, and Dirk Spielvogel. “Total Synthesis of Hematoporphyrin and Protoporphyrin; A Conceptually New Approach”. CHIMIA 67, no. 4 (April 24, 2013): 204. Accessed April 29, 2025. https://www.chimia.ch/chimia/article/view/2013_204.