1. Boyd, J.P., Chebyshev and Fourier Spectral Methods, Dover: Mineola, 2001.
2. Orszag, S.A. and Gotlib, D., Numerical Analysis of Spectral Methods. Theory and Applications, Philadelphia: SIAM, 1977.
3. Hafeez, M.B. and Krawczuk, M.A., Review: applications of the spectral finite element method, Arch. Comput. Methods Eng., 2023, vol. 30, pp. 3453–3465. https://doi.org/10.1007/s11831-023-09911-2
4. Babenko, K.I., Osnovy chislennogo analiza (Fundamentals of Numerical Analysis), Moscow; Izhevsk: Regular &Chaotic Dynsmics, 2002.
5. Babenko, K.I., Some remarks on the discretization of elliptic problems, Dokl. Akad. Nauk SSSR, 1975, vol. 221, no. 1, p. 1114.