@article{GMJ_1996__3_6_47680,
     author = {Partsvania, N.},
     title = {On oscillation of solutions of second-order systems of deviated differential equations.},
     journal = {Georgian mathematical journal},
     pages = {571--582},
     year = {1996},
     volume = {3},
     number = {6},
     zbl = {0868.34054},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1996__3_6_47680/}
}