@article{ARM_1981__17_3_a1,
     author = {Bartu\v{s}ek, Miroslav},
     title = {On asymptotic properties of oscillatory solutions of the system of differential equations of fourth order},
     journal = {Archivum mathematicum},
     pages = {125--136},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1981},
     mrnumber = {672316},
     zbl = {0483.34024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1981__17_3_a1/}
}