1. Bari N. K., Stechkin S. B.,The best approximation and differential properties of two conjugate functions Trudy Mosk. Matem. Ob-va5, 483?522 (1956)
2. Berthold D., Hoppe W., Silbermann B.,A fast algorithm for solving the generalized airfoil equation, J. Comp. Appl. Math.,43 (1992), 185?219
3. B�ttcher A., Karlovich Yu.I.,Carleson Curves, Muckenhoupt Weights, and Toeplitz Operators, Birkh�user Verlag, Basel 1997
4. Capobianco M.R., Mastroianni G., Russo M.G.,Pointwise and uniform approximation of the finite Hilbert transform, Approximation and Optimization, Proceedings of the International Conference on Approximation and Optimization (Romania)-ICAOR, Cluj-Napoca, July 29?August 1, 1996. vol. I, pp. 45?66
5. Chanillo S., Muckenhoupt B.,Weak type estimates for C�saro sums of Jacobi polynomial series, Mem. Amer. Math. Soc.102, n. 487, 1993