Ramazani, A., Souldozi, A., Marandi, F., & Reza Kazemizadeh, A. (2016). Synthesis of Coumarins from in situ Generated Stabilized Phosphorus Ylides in the Presence of Solid Catalysts in Solvent-free Conditions. Asian Journal of Chemistry, 17(1), 293–296. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/19764