@article{SM_1976_28_2_a7,
     author = {A. K. Gushchin},
     title = {On an estimate of the {Dirichlet} integral in unbounded domains},
     journal = {Sbornik. Mathematics},
     pages = {249--261},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1976},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1976_28_2_a7/}
}