Khalaf, Maan Ziadan. “Synthesis of a Series of Hexacyclic Compounds, Including the Pyran Ring Derived from Chalcone, and Evaluation of Their Biological Effectiveness”. American Journal of Bioscience and Clinical Integrity, vol. 1, no. 8, Sept. 2024, pp. 34-47, https://biojournals.us/index.php/AJBCI/article/view/79.