M. YAHYA, O.; A. AHMED, B.; THANOON, I. Ultrasound-assisted one-pot synthesis of dihydropyrimid-2-one/thiones catalyzed by zirconyl chloride hexahydrate. Journal of Education and Science, [S. l.], v. 26, n. 5, p. 154–159, 2013. DOI: 10.33899/edusj.2013.163065. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41307. Acesso em: 10 sep. 2025.