Barzegar, M. et al. 2022. Preparation, Characterization and Application of a Novel Organic-Inorganic Hybrid Magnetic Nanomaterial as a Highly Efficient Catalyst for the Synthesis of Bis-Coumarins. Iranian Journal of Catalysis. 12, 1 (Feb. 2022). DOI:https://doi.org/10.30495/ijc.2022.688895.