@article{SM_1987_56_2_a9,
     author = {D. M. Lekveishvili},
     title = {Unimprovable estimates in {H\"older} spaces for generalized solutions of the {Dirichlet} problem for a~class of fourth order elliptic equations},
     journal = {Sbornik. Mathematics},
     pages = {429--446},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1987_56_2_a9/}
}