Arystangalikyzy, Akmaral, and Aksaule Zhubanysheva. 2025. “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 127 (3). https://doi.org/10.26577/JMMCS202512732.