@article{ARM_1977__13_3_a3,
     author = {Neuman, Franti\v{s}ek and Stan\v{e}k, Svatoslav},
     title = {On the structure of second-order periodic differential equations with given characteristic multipliers},
     journal = {Archivum mathematicum},
     pages = {149--157},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1977},
     mrnumber = {0460790},
     zbl = {0384.34027},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1977__13_3_a3/}
}