Ha, Sie-Tiong, Teck-Leong Lee, Guan-Yeow Yeap, Hong-Cheu Lin, Masato M. Ito, and Ramesh T. Subramaniam. 2011. “Synthesis and Mesomorphic Properties of 4-(Methylthio)benzylidene-4’-N-Alkanoyloxyanilines”. Asian Journal of Chemistry 23 (10):4609-12. https://asianpubs.org/index.php/ajchem/article/view/10908.