Synthesis of bis(indolyl) methanes Using Environmentally Favorable Cellulose Supported Sulfanilic Acid Catalyst. Int J Sci Res Sci & Technol [Internet]. 2025 Jul. 9 [cited 2025 Jul. 22];12(4):196-9. Available from: https://www.ijsrst.com/index.php/home/article/view/IJSRST251281