Saud Al-Otebi , Ghalib Al-Otebi, S. E.-G. N. A.-O. , M. A.-O. ,. “EXACT SOLUTIONS TO THE WAVE EQUATIONS IN (1+1)-, (2+1)- AND (3+1)- DIMENSIONS BY THE DECOMPOSITION METHOD”. Asian Journal of Current Engineering and Maths, vol. 1, no. 3, Oct. 2013, http://innovativejournal.in/index.php/ajcem/article/view/69.