References
References
- Feschiev , I . 1988 . On an upper bound of best uniform approximation of the class by functions of class . C.R. Acad. Bulg. Sci. , 41 ( 6 ) : 25 – 28 .
- Hvedelidze BV 1977 The method of Cauchy-type integrals in the discontinuous boundary-value problems of the theory of holomorphic functions of a complex variable J. Sov. Math. 7 309 414 (translation from Itogi Nauki Tech., Ser. Sovrem. Probl. Math., 7, 6–162
- Kornejchuk NP 1987 Exact Constants in Approximation Theory Nauka Moscow p. 424
- Rudin W 1966 Real and Complex Analysis New-York Mc.Graw-Hill Book Co
- Stein , EM and Weiss , G . 1959 . An extension of a theorem of Marcinkiewicz and some of its applications . J. Math. and Mech. , 8 ( 2 ) : 263 – 284 .
- Zygmund , A . 1959 . Trigonometric Series, Cambridge at the University Press , 1