@article{DAN_1969_187_3_a7,
     author = {S. N. Kruzhkov},
     title = {Linear and nonlinear parabolic systems on the plane},
     journal = {Doklady Akademii Nauk},
     pages = {510--513},
     publisher = {mathdoc},
     volume = {187},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_3_a7/}
}