Iraj Alaei, Yap Chen Lee, Mohd Hamdi Bin Ali Buraidah, Iis Sopyan, Yose Fachmi Buys 2020. Optical and Electrical Properties of Polymer Blend Electrolyte Containing Sodium Carboxyl Methylcellulose, Poly (acrylamide-co-acrylic acid), and Sodium Sulfide. International Journal of Advanced Science and Technology. 29, 7 (Jul. 2020), 12241 - 12247.