Mathematical Inequalities & Applications · Volume 26, Issue 1 Hardy-Littlewood-Stein inequalities for double trigonometric series 26-01 Pages 1-15 DOI 10.7153/mia-2023-26-01 Downloads Short PDF Full PDF PNG Authors Erlan Nursultanov Durvudkhan Suragan Keywords Hardy-Littlewood-Stein inequality double trigonometric series Fourier series Lorentz space Subject classes 42A16 42B05