Tomma JH. Synthesis , Characterization and Study The Liquid Crystalline Properties of N-Acyl , Thiourea and Imidazole Derivatrives. IHJPAS. 2017;23(3):134-151. Accessed August 15, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/916