RAMAZANI, ALI. “Sodium Hydrogen Carbonate Powder Catalyzed Intermolecular Wittig Reaction of Fluorin-Containing Stabilized Phosphorus Ylides With Ninhydrin”. Asian Journal of Chemistry, vol. 19, no. 2, Mar. 2010, pp. 1584-6, https://asianpubs.org/index.php/ajchem/article/view/20345.