HAMIDIAN, HOOSHANG, and AHMAD MOMENI TIKDARI. 2010. “Synthesis of Unsaturated 5(4H)-Oxazolone Derivatives in the Presence of Antimony Pentafluoride As Catalyst”. Asian Journal of Chemistry 19 (2):970-74. https://asianpubs.org/index.php/ajchem/article/view/20141.