1. Criscuolo G., Della Vecchia B., Lubinsky D. S., Mastroianni G. Functions of the second kind for Freud weights and series expansions of Hilbert transform. To appear.
2. Davis P. J., Rabinowitz P. Methods of Numerical Integration, 2nd edition. Academic Press, New York, 1984.
3. De Vore R. A., Scott L. R. Error bounds for Gaussian quadrature and weight- ed-L1 polynomial approximation. SIAM J. Numer. Anal, 21: 400–412, 1984.
4. Freud G. Orthogonal Polynomials. Akadémiai Kiadó, Budapest, 1971.
5. Freud G. A certain class of orthogonal polynomials (in Russian). Mat. Zametki, 9: 511–520, 1971.