Kangani, M., Hazeri, N. and Maghsoodlou, M.-T. 2019. PECTIN; HETERO POLYSACCHARIDE AS A GREEN AND NATURAL CATALYST FOR THE SYNTHESIS OF DIHYDRO-2-OXOPYRROLES AND 3,4,5-TRISUBSTITUTED FURAN-2(5H)-ONES. Journal of the Chilean Chemical Society. 63, 4 (Jan. 2019).