@article{DAN_1967_175_3_a0,
     author = {S. N. Antontsev and V. N. Monakhov},
     title = {Riemann{\textendash}Hilbert boundary value problem with discontinuous boundary conditions for quasi-linear elliptic systems of equations},
     journal = {Doklady Akademii Nauk},
     pages = {511--513},
     year = {1967},
     volume = {175},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_175_3_a0/}
}