Abdulmadjid, S. N.; Kurniawan, K. H.; Lie, T. J.; Lee, Y. I.; Kitazima, I.; Kagawa, K. Low-Cost Real-Time Gas Monitoring Using a Laser Plasma Induced by a Third Harmonic Q-Switched Nd-YAG Laser. J. Eng. Technol. Sci. 2014, 37, 91-106.