@article{SM_1968_5_1_a3,
     author = {Yu. A. Lysenko and B. M. Pisarevskii},
     title = {Instability of harmonic capacity and approximations of continuous functions by harmonic functions},
     journal = {Sbornik. Mathematics},
     pages = {53--72},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1968},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1968_5_1_a3/}
}