@article{DE_1998_34_6_a4,
     author = {I. T. Kiguradze and I. P. Stavroulakis},
     title = {On the existence of proper oscillating solutions of advanced differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {751--757},
     publisher = {mathdoc},
     volume = {34},
     number = {6},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_6_a4/}
}