Yaqub, Ghazala, Erum A. Hussain, and Bushra Mateen. “Systematic Approach for Synthesis of Carbazole-9-Acetic Acid ”. Asian Journal of Chemistry 21, no. 7 (March 30, 2010): 5493–5496. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/18343.