@article{SM_1980_36_1_a0,
     author = {A. K. Gushchin and V. P. Mikhailov},
     title = {On boundary values in $L_p$, $p>1$, of solutions of elliptic equations},
     journal = {Sbornik. Mathematics},
     pages = {1--19},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1980},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1980_36_1_a0/}
}