@article{SM_1973_19_4_a0,
     author = {F. G. Arutyunyan},
     title = {Representation of~measurable functions almost everywhere by convergent series},
     journal = {Sbornik. Mathematics},
     pages = {469--508},
     year = {1973},
     volume = {19},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1973_19_4_a0/}
}