@article{ARM_1994__30_2_a3,
     author = {Bartu\v{s}ek, Miroslav},
     title = {On the structure of solutions of a system of three differential inequalities},
     journal = {Archivum mathematicum},
     pages = {117--130},
     publisher = {mathdoc},
     volume = {30},
     number = {2},
     year = {1994},
     mrnumber = {1292563},
     zbl = {0820.34007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1994__30_2_a3/}
}