@article{DE_1974_10_2_a3,
     author = {Ya. V. Bykov and G. D. Merzljakova},
     title = {The oscillation of the solutions of nonlinear differential equations with deviating argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {210--220},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_2_a3/}
}