Revenko, V. P. “Computational Method for Solving Boundary Problems of the Theory of Elasticity Using Non-Orthogonal Systems of Functions”. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, no. 3, Dec. 2021, pp. 101-6, https://doi.org/10.17721/1812-5409.2021/3.19.