@article{RM_1983_38_4_a5,
     author = {P. L. Ul'yanov},
     title = {Kolmogorov and divergent {Fourier} series},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {57--100},
     year = {1983},
     volume = {38},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1983_38_4_a5/}
}