“Synthesis and Characterization of Newly Schiff Base Polymers of 4, 4’- Methylene Bis (Cinnamaldehyde) With Urea and 1,2-Phenylenediamine”. Sindh University Research Journal - SURJ (Science Series), vol. 46, no. 1, Mar. 2014, https://sujo.usindh.edu.pk/index.php/SURJ/article/view/5314.