@article{MZM_1979_26_2_a13,
     author = {S. A. Malyugin},
     title = {Topology of covering sets and the continuous extension of outer measures},
     journal = {Matemati\v{c}eskie zametki},
     pages = {285--292},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a13/}
}