Malek, F., H. Nornikman, and O. Nadiah. 2015. “Pyramidal Microwave Absorber Design from Waste Material Using Rice Husk and Rubber Tire Dust”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 4 (1):23-30. https://jtec.utem.edu.my/jtec/article/view/471.