Javad Sabounchei, Seyyed, Mohsen Ahmadi Gharacheh, and Marjan Hosseinzadeh. 2010. “Synthesis and Multinuclear NMR Study of Novel Complexes of Zn(II) and Hg(II) Containing Phosphorus Ylides”. Asian Journal of Chemistry 22 (3):1949-56. https://asianpubs.org/index.php/ajchem/article/view/11360.