Azarifar, Davood, Younes Abbasi, and Omolbanin Badalkhani. “Leucine: Green and Efficient Catalyst for the Synthesis of 4H-Chromenes”. JOURNAL OF ADVANCES IN CHEMISTRY 10, no. 9 (May 30, 2017): 3197–3202. Accessed May 14, 2024. https://rajpub.com/index.php/jac/article/view/6168.