Mandal, G., N. Y. Tanisha, S. Sultana, and A. Mamun. “Dust-Ion-Acoustic Shock Waves in a Five Component Dusty Plasma With Positive and Negative Ions”. Boson Journal of Modern Physics, Vol. 2, no. 2, Dec. 2015, pp. 97-04, http://www.scitecresearch.com/journals/index.php/bjmp/article/view/361.