Abd El Latif, F.M., A.K. Khalafalla, M.Z.A. Badar, and D. Dopp. “Photocyclization of 1,4-Naphthaquinone With Β-Alanine”. Asian Journal of Chemistry 5, no. 2 (March 30, 2010): 429–431. Accessed July 24, 2024. https://asianpubs.org/index.php/ajchem/article/view/24831.