@article{RRACEFN_1988_1988_1_a20,
     author = {Borzymowski, Andrzej and  W. Michalski, Marek},
     title = {A nonlinear boundary value problem for a system of hyperbolic partial differential equations.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales },
     pages = {235-247},
     publisher = {mathdoc},
     volume = {82},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1988_1988_1_a20/}
}