ARYSTANGALIKYZY, A.; ZHUBANYSHEVA, A. OPTIMAL APPROXIMATION OF SOLUTIONS OF POISSON EQUATIONS BY INITIAL DATA IN THE FORM OF ACCURATE AND INACCURATE INFORMATION OF TRIGONOMETRIC FOURIER COEFFICIENTS. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 127, n. 3, 2025. DOI: 10.26577/JMMCS202512732. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/1698. Acesso em: 9 oct. 2025.