Elham, Sedighinia, and Zahed Sargoli Mozhgan. “Silica Chloride and Boron Sulfonic Acid As Solid Acid Catalysts in Preparation of Ethers and Esters Under Solvent-Free Condition”. Asian Journal of Chemistry 23, no. 4 (December 28, 2010): 1456–1458. Accessed November 24, 2024. https://asianpubs.org/index.php/ajchem/article/view/10195.