@article{RM_1978_33_4_a0,
     author = {A. I. Koshelev},
     title = {Regularity of solutions of quasi-linear elliptic systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--52},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1978},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1978_33_4_a0/}
}