@article{MZM_2001_69_3_a0,
     author = {A. S. Belov},
     title = {A {Condition} for {Convergence} in {Mean} of {Trigonometric} {Series}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {323--328},
     publisher = {mathdoc},
     volume = {69},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_3_a0/}
}