Ramazani, Ali, Mahshid Rahimifard, and Ali Souldozi. “Silica Gel Powder Catalyzed Stereoselective Conversion of 2-(2-Acetylphenoxy)-3- (triphenylphosphoranylidene)- Butanedioates to Dialkyl (Z)-2-(2-Acetylphenoxy)- 2- Butenedioates in Solvent-Free Conditions”. Asian Journal of Chemistry 18, no. 1 (March 30, 2010): 695–697. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/21429.