@article{10_21136_CMJ_1958_100296,
     author = {R\'ab, Milo\v{s}},
     title = {\"Uber lineare {Perturbationen} eines {Systems} von linearen {Differentialgleichungen}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {222--229},
     publisher = {mathdoc},
     volume = {08},
     number = {2},
     year = {1958},
     doi = {10.21136/CMJ.1958.100296},
     mrnumber = {0102633},
     zbl = {0082.29805},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1958.100296/}
}