@article{MZM_1976_19_4_a18,
     author = {N. S. Gusel'nikov},
     title = {An analog of the {Vitali-Hahn-Saks} theorem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {641--652},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_4_a18/}
}