@article{DAN_1973_211_6_a15,
     author = {S. N. Syukaev},
     title = {A priori estimates for solutions of quasi-linear differential equations of elliptic type},
     journal = {Doklady Akademii Nauk},
     pages = {1306--1309},
     publisher = {mathdoc},
     volume = {211},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_211_6_a15/}
}