Galumian, A. G., and H. M. Arakelian. “MATHEMATICAL COMPARISON OF TWO WELL-KNOWN PATTERNS OF MATERIAL EQUATIONS FOR GYROTROPIC MEDIA”. Proceedings of the YSU A: Physical and Mathematical Sciences 36, no. 3 (199) (September 20, 2002): 35–40. Accessed January 21, 2026. https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol36_no3_2002_pp035-040.