Vlasyk HM. Order estimates of the $L_q$-norms of generalized derivatives of the Dirichlet-type kernels with an arbitrary choice of harmonics. Ukr. Mat. Zhurn. [Internet]. 2017Oct.25 [cited 2024Apr.20];69(10):1299-30. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1784