Demeubayeva Ж., Kasenov С., Temirbekov Н., and Temirbekov А. 2026. “APPLICATION OF THE ADJOINT EQUATION METHOD IN THE NUMERICAL SOLUTION OF THE INVERSE PROBLEM OF MAGNETOTELLURIC SOUNDING”. Bulletin of Abai KazNPU. Series of Physical and Mathematical Sciences 94 (2). Almaty, Kazakhstan:44-54. https://doi.org/10.51889/2959-5894.2026.94.2.004.