@article{MZM_2009_85_1_a7,
     author = {D. V. Portnyagin},
     title = {Schauder {Estimates} and {Complete} {Regularity} of the {Solutions} of an {Elliptic} {System}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {89--97},
     publisher = {mathdoc},
     volume = {85},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_85_1_a7/}
}