Kawade, D. S., Deshmukh, S. N., Gujar, J. B., & Shingare, M. S. (2015). Tannic Acid an Efficient Catalyst for the Synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives. Orbital: The Electronic Journal of Chemistry, 7(2), 155-159. Retrieved from https://periodicos.ufms.br/index.php/orbital/article/view/17884