Tasqeeruddin, S., Yahya I. Asiri, and S. Shaheen. 2020. “Zirconium(IV) Oxychloride: A Simple and Efficient Catalyst for the Synthesis of Chromen-2-One Derivatives”. Asian Journal of Chemistry 32 (10):2611-16. https://doi.org/10.14233/ajchem.2020.22849.