@article{CMUC_1979__20_2_a0,
     author = {Roos, Hans-Georg},
     title = {Die {Konstruktion} asymptotischer {Fundamentalsysteme} f\"ur lineare {Differentialgleichungen} mit {Wendepunkten}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {195--205},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1979},
     mrnumber = {539551},
     zbl = {0418.34012},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979__20_2_a0/}
}