Wang Y, Lu G, Wu L. Silica Sulfuric Acid as Heterogeneous and Recoverable Catalysts for the Synthesis of Dithienylmethanes under Solvent-Free Conditions. ajc [Internet]. 2011 Jun. 10 [cited 2024 Nov. 23];23(9):4221-2. Available from: https://asianpubs.org/index.php/ajchem/article/view/10820