@article{DAN_1996_346_5_a4,
     author = {Yu. A. Markov and M. A. Markova},
     title = {On some exact solutions of a system of nonlinear elliptic},
     journal = {Doklady Akademii Nauk},
     pages = {597--599},
     year = {1996},
     volume = {346},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_346_5_a4/}
}