Some inequalities for trigonometric polynomials in the $L_p$ metric, $0<p<1$
P. Oswald

This publication is cited in the following articles:

1. V. V. Arestov, “Sharp inequalities for trigonometric polynomials with respect to integral functionals”, Proc. Steklov Inst. Math., 273: suppl. 1 (2011), S21–S36        
2. È. A. Storozhenko, “Nikol'skii-Stechkin inequality for trigonometric polynomials in $L_0$”, Math. Notes, 80:3 (2006), 403–409