أحمد ث. . 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. TUJ-BA 2024, 46, 59-76.