@article{ARM_1997_33_4_a4,
     author = {D\v{z}urina, Jozef},
     title = {Oscillation of a second order delay differential equations},
     journal = {Archivum mathematicum},
     pages = {309--314},
     year = {1997},
     volume = {33},
     number = {4},
     mrnumber = {1601333},
     zbl = {0915.34062},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1997_33_4_a4/}
}