Khazaei, Ardeshir, Abbas Amini Manesh, Heidar Ali Alavi-Nik, and Zahra Toodeh Roosta. 2010. “SnCl2·2H2O and Ni(OAc)2&Middot;4H2O: Efficient Heterogeneous Inorganic Catalysts for the Chemoselective Synthesis of Geminal Diacetates (Acylal) Under Solvent-Free Conditions”. Asian Journal of Chemistry 23 (2):627-30. https://asianpubs.org/index.php/ajchem/article/view/15861.