Grigoryan, S. A., Manukyan, S. M. and Ohanyan, G. G. (2004) “EXACT PARTICULAR SOLUTIONS OF NONLINEAR KLEIN-GORDON EQUATION AND THEIR APPLICATION IN FLUID MECHANICS”, Proceedings of the YSU A: Physical and Mathematical Sciences. Yerevan, Armenia, 38(3 (205), pp. 42–48. doi: 10.46991/PYSU:A/2004.38.3.042.