Hamzah, Norhayati, Deepak Kumar Ghodgaonkar, Kamal Faizin Che Kasim, and Zaiki Awang. 2005. “Microwave Non-Destructive Testing of Coatings and Paints Using Free Space Microwave Measurement”. Scientific Research Journal 2 (2):17-23. https://doi.org/10.24191/srj.v2i2.9329.