@article{ARM_1977__13_3_a6,
     author = {Tryhuk, V\'aclav},
     title = {An oscillation criterion for a canonical form of third order linear differential equations},
     journal = {Archivum mathematicum},
     pages = {175--180},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1977},
     mrnumber = {0481261},
     zbl = {0384.34022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1977__13_3_a6/}
}