1. Arestov V. V.: On integral inequalities for trigonometric polynomials and their derivatives. Izv. Akad. Nauk SSSR, Ser. Mat., 45, 3–22 (1981)
2. Aziz A.: Inequalities for the polar derivative of a polynomial. J. Approx. Theory, 55, 183–193 (1988)
3. Aziz A., Rather N. A.: Some Zygmund-type L
q
inequalities for polynomials. J. Math. Anal. Appl., 289, 14–29 (2004)
4. S. N. Bernstein, Leçons sur les propriétés extrémales et la meilleure approximation des fonctions analytiques d’une variable réelle, Gauthier-Villars (Paris, 1926).
5. N. G. de Bruijn, Inequalities concerning polynomials in the complex domain, Nederl. Akad. Wetensch. Proc. Ser. A, 50 (1947), 1265–1272.