JAVAD SABOUNCHEI, SEYYED, and VIDA JODAIAN. “Synthesis and Spectral Characterization of 4-Methoxybenzoylmethylenetri-P-Tolylphosphorane and It’s Reaction With Mercury(II) Halides”. Asian Journal of Chemistry, vol. 19, no. 7, Mar. 2010, pp. 5477-82, https://asianpubs.org/index.php/ajchem/article/view/13158.