@article{IVM_1976_6_a5,
     author = {A. I. Ko\v{s}elev},
     title = {The smoothness of the solutions of second order quasilinear elliptic systems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {45--61},
     publisher = {mathdoc},
     number = {6},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_6_a5/}
}