JIN T-S, ZHAO R-Q, LI T-S. An Efficient and Convenient Procedure for Preparation of 5-Arylidene Barbituric Acid Catalyzed by ZrO2/SO42- Solid Superacid with Grinding. ajc [Internet]. 2010 Mar. 30 [cited 2024 Jul. 23];19(5):3815-20. Available from: https://asianpubs.org/index.php/ajchem/article/view/13284