Mamikonyan, H. A. “INITIAL BOUNDARY VALUE PROBLEM FOR SOBOLEV TYPE NONLINEAR EQUATIONS”. Proceedings of the YSU A: Physical and Mathematical Sciences 40, no. 2 (210) (May 30, 2006): 33–40. Accessed November 23, 2024. https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol40_no2_2006_pp033-040.