Synthesis of bis(indolyl) methanes Using Environmentally Favorable Cellulose Supported Sulfanilic Acid Catalyst. International Journal of Scientific Research in Science and Technology, [S. l.], v. 12, n. 4, p. 196–199, 2025. DOI: 10.32628/IJSRST251281. Disponível em: https://www.ijsrst.com/index.php/home/article/view/IJSRST251281. Acesso em: 22 jul. 2025.