@article{SM_1994_78_2_a2,
     author = {R. K. Seifullaev},
     title = {Integral operators of potential type and their boundary properties},
     journal = {Sbornik. Mathematics},
     pages = {313--332},
     year = {1994},
     volume = {78},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1994_78_2_a2/}
}