@article{MABA_1992_6_4_a1,
     author = {Z. Kamont and K. Topolski},
     title = {Mixed {Problems} for {Quasilinear} {Hyperbolic} {Differential-Functional} {Systems}},
     journal = {Mathematica balkanica},
     pages = {313},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1992},
     url = {http://geodesic.mathdoc.fr/item/MABA_1992_6_4_a1/}
}