(1)
Azimi, S. C.; Kefayati, H. Cellulose Sulfuric Acid: An Efficient Biopolymer-Based Catalyst for the Synthesis of 5H-dibenzo[b,i]xanthene-Tetraones and spiro[dibenzo[b,i]xanthene-13,3′-Indoline]-Pentaones under Solvent Free Conditions. Iran. J. Catal. 2024, 3 (3).