@article{SM_2004_195_12_a4,
     author = {V. P. Mikhailov},
     title = {Existence of boundary values for biharmonic functions},
     journal = {Sbornik. Mathematics},
     pages = {1781--1793},
     year = {2004},
     volume = {195},
     number = {12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_12_a4/}
}