A. Maleki, R. Ghalavand, and R. Firouzi-Haji, “A novel and eco-friendly o-phenylendiamine stabilized on silica-coated magnetic nanocatalyst for the synthesis of indenoquinoline derivatives under ultrasonic-assisted solvent-free conditions”, Iran. J. Catal., vol. 8, no. 3, Feb. 2024, Accessed: Jun. 09, 2026. [Online]. Available: https://oiccpress.com/ijc/article/view/4006