MotornayaO. V., & MotornyiV. P. (2014). Generalized Lebesgue Constants and the Convergence of Fourier–Jacobi Series in the Spaces $L_{1,A,B}$. Ukrains’kyi Matematychnyi Zhurnal, 66(2), 259–268. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2128