أحمد ث. 2024. Synthesis of Some New Heterocyclic Compounds [(-1,3,4-oxadiazole), (1,3,4-oxadiazole-2-thiol), (1,3,4-thiadiazole), (1,2,4-triazin-5-one), (1,2,4-triazole-3-thiol)] containing Fluorine moiety, Derived from 9H-fluorene-2-carboxylic acid . Tishreen University Journal -Basic Sciences Series. 46, 3 (Nov. 2024), 59–76.