Mohd. Zain, Sharifuddin, Mohd. Rodzi Mohammad, and Ng Seik Weng. 2005. “Crystallographic and Geometry-Optimization Study On 2,4,6-Trinitrophenol:3-Methyl-4-Nitropyridine N-Oxide (1/1)”. Malaysian Journal of Science 24 (2):71-77. http://ojie.um.edu.my/index.php/MJS/article/view/8332.