1. Orthogonal Polynomials and Special Functions;Askey,1975
2. Orthogonal Polynomials, vol. 23;Gabor,1939
3. Theory of Approximation of Functions of a Real Variable;Timan,1994
4. Chebyshev and Fourier Spectral Methods;Boyd,2001
5. Spectral Methods: Fundamentals in Single Domains;Canuto,2006