@article{MZM_1988_44_4_a8,
     author = {N. L. Pachulia and A. I. Stepanets},
     title = {Strong summability of {Fourier} series on classes of $(\psi,\beta)$-differentiable functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {506--516},
     publisher = {mathdoc},
     volume = {44},
     number = {4},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1988_44_4_a8/}
}