Koshanov, B.D., A. Baiarystanov, M. Daurenkyzy, и S.O. Turymbet. «GREEN’S FUNCTIONS OF SOME BOUNDARY VALUE PROBLEMS FOR BYHARMONIC OPERATORS AND THEIR CORRECT CONSTRICTIONS». Academic Scientific Journal of Computer Science, no. 2 (апрель 15, 2021): 15–23. просмотрено декабрь 13, 2025. http://89.250.84.46/physics-mathematics/article/view/280.