1. E. W. Cheney (1966). Introduction to Approximation Theory, New York: McGraw-Hill.
2. A. Erdélyi, W. Magnus, F. Oberhettinger, F. Tricomi (1953): Higher Transcendental Functions. New York: McGraw-Hill.
3. M. von Golitschek (1980):Approximation by incomplete polynomials. J. Approx. Theory.,28:155–160.
4. A. L. Levin, D. S. Lubinsky (1994): Christoffel Functions and Orthogonal Polynomials for Exponential Weights on [−1, 1]. Memoirs of the American Mathematical Society, vol. 535. Providence, RI: American Mathematical Society.
5. G. G. Lorentz (1980):Problems for incomplete polynomials. In: Approximation Theory III (E. W. Cheney, ed.). New York: Academic Press, pp. 41–73.