Silica Bonded Bis(Hydrogensulphato)Benzene as a New, Sustainable Catalytic Material for an Efficient and Aqueous Based Synthesis of 5-Oxo-4H-Pyrano[3,2-c]Quinolone Scaffolds. - Kadam, K. R.; Waghmare, A. S.; Murade, V. D.; Gurav, S. S.; Wankhede, D. S.; Kamble, V. T. (Polycyclic Aromatic Compounds, 2023)